Expected Behavior of the rule

Configuration items on the rule are all in use.

Context

Some are deprecated. These should be removed for detekt 2.

For reference, those are the one I found:

detekt-rules-empty/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/empty/EmptyFunctionBlock.kt
25-    @Configuration("Excludes all the overridden functions")
26:    @Deprecated("Use `ignoreOverridden` instead")
27-    private val ignoreOverriddenFunctions: Boolean by config(false)

detekt-rules-naming/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/naming/VariableNaming.kt
37-    @Configuration("ignores member properties that have the override modifier")
38:    @Deprecated("This configuration is ignored and will be removed in the future")
39-    @Suppress("UnusedPrivateMember")

detekt-rules-naming/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/naming/FunctionParameterNaming.kt
32-    @Configuration("ignores overridden functions with parameters not matching the pattern")
33:    @Deprecated("Use `ignoreOverridden` instead")
34-    private val ignoreOverriddenFunctions: Boolean by config(true)
--
36-    @Configuration("ignores overridden functions with parameters not matching the pattern")
37:    @Deprecated("This configuration is ignored and will be removed in the future")
38-    @Suppress("DEPRECATION", "UnusedPrivateMember")

detekt-rules-naming/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/naming/ConstructorParameterNaming.kt
34-    @Configuration("ignores constructor properties that have the override modifier")
35:    @Deprecated("This configuration is ignored and will be removed in the future")
36-    @Suppress("UnusedPrivateMember")

detekt-rules-naming/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/naming/FunctionNaming.kt
34-    @Configuration("ignores functions that have the override modifier")
35:    @Deprecated("This configuration is ignored and will be removed in the future")
36-    @Suppress("UnusedPrivateMember")

detekt-rules-naming/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/naming/BooleanPropertyNaming.kt
39-    @Configuration("ignores properties that have the override modifier")
40:    @Deprecated("This configuration is ignored and will be removed in the future")
41-    @Suppress("UnusedPrivateMember")

detekt-rules-naming/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/naming/MemberNameEqualsClassName.kt
64-    @Configuration("if overridden functions and properties should be ignored")
65:    @Deprecated("Use `ignoreOverridden` instead")
66-    private val ignoreOverriddenFunction: Boolean by config(true)

detekt-rules-style/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/style/UseDataClass.kt
52-    @Configuration("allows to provide a list of annotations that disable this check")
53:    @Deprecated("Use `ignoreAnnotated` instead")
54-    private val excludeAnnotatedClasses: List<Regex> by config(emptyList<String>()) { list ->

detekt-rules-style/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/style/ForbiddenComment.kt
94-    @Configuration("forbidden comment strings")
95:    @Deprecated("Use `comments` instead, make sure you escape your text for Regular Expressions.")
96-    private val values: List<String> by config(emptyList())
--
113-    @Configuration("error message which overrides the default one")
114:    @Deprecated("Use `comments` and provide `reason` against each `value`.")
115-    private val customMessage: String by config("")

detekt-rules-style/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/style/UnderscoresInNumericLiterals.kt
36-    @Configuration("Length under which base 10 numbers are not required to have underscores")
37:    @Deprecated("Use `acceptableLength` instead")
38-    private val acceptableDecimalLength: Int by config(5) { it - 1 }

detekt-rules-style/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/style/AbstractClassCanBeConcreteClass.kt
57-    @Configuration("Allows you to provide a list of annotations that disable this check.")
58:    @Deprecated("Use `ignoreAnnotated` instead")
59-    private val excludeAnnotatedClasses: List<Regex> by config(emptyList<String>()) { list ->

detekt-rules-errorprone/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/bugs/IgnoredReturnValue.kt
58-    @Configuration("if the rule should check only annotated methods")
59:    @Deprecated("Use `restrictToConfig` instead")
60-    private val restrictToAnnotatedMethods: Boolean by config(defaultValue = true)

detekt-rules-complexity/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/complexity/LongParameterList.kt
33-
34:    @Deprecated("Use `allowedFunctionParameters` and `allowedConstructorParameters` instead")
35-    @Configuration("number of parameters required to trigger the rule")

detekt-formatting/src/main/kotlin/io/gitlab/arturbosch/detekt/formatting/wrappers/Indentation.kt
28-    @Configuration("continuation indentation size")
29:    @Deprecated("`continuationIndentSize` is ignored by KtLint and will have no effect")
30-    @Suppress("UnusedPrivateMember")

Those rules are instead deprecated, perhaps we should just remove them:

detekt-rules-errorprone/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/bugs/DuplicateCaseInWhenExpression.kt
31-@ActiveByDefault(since = "1.0.0")
32:@Deprecated("Rule deprecated as compiler performs this check by default")
33-class DuplicateCaseInWhenExpression(config: Config) : Rule(

detekt-rules-errorprone/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/bugs/RedundantElseInWhen.kt
58-@ActiveByDefault(since = "1.2.0")
59:@Deprecated("Rule deprecated as compiler performs this check by default")
60-class RedundantElseInWhen(config: Config) : Rule(

detekt-rules-errorprone/src/main/kotlin/io/gitlab/arturbosch/detekt/rules/bugs/MissingWhenCase.kt
68-@RequiresTypeResolution
69:@Deprecated("Rule deprecated as compiler performs this check by default")
70-class MissingWhenCase(config: Config) : Rule(