Remove unnecessary functions

Author: k163377

src/main/kotlin/com/fasterxml/jackson/module/kotlin/KotlinAnnotationIntrospector.kt

@@ -26,8 +26,6 @@ import java.lang.reflect.Constructor
 import java.lang.reflect.Field
 import java.lang.reflect.Method
 import kotlin.reflect.KFunction
-import kotlin.reflect.KType
-import kotlin.reflect.full.createType
 import kotlin.reflect.jvm.javaType
 import kotlin.reflect.jvm.kotlinFunction
 
@@ -159,7 +157,6 @@ internal class KotlinAnnotationIntrospector(
     // This could be a setter or a getter of a class property or
     // a setter-like/getter-like method.
     private fun AnnotatedMethod.hasRequiredMarker(): Boolean? = this.getRequiredMarkerFromCorrespondingAccessor()
-        ?: this.member.getRequiredMarkerFromAccessorLikeMethod()
 
     private fun AnnotatedMethod.getRequiredMarkerFromCorrespondingAccessor(): Boolean? {
         val memberSignature = member.toSignature()
@@ -173,17 +170,6 @@ internal class KotlinAnnotationIntrospector(
         return null
     }
 
-    // Is the member method a regular method of the data class or
-    private fun Method.getRequiredMarkerFromAccessorLikeMethod(): Boolean? = this.kotlinFunction?.let { method ->
-        val byAnnotation = this.isRequiredByAnnotation()
-        return when {
-            method.isSetterLike() -> requiredAnnotationOrNullability(byAnnotation, method.isMethodParameterRequired(0))
-            else -> null
-        }
-    }
-
-    private fun KFunction<*>.isSetterLike(): Boolean = parameters.size == 2 && returnType == UNIT_TYPE
-
     private fun AnnotatedParameter.hasRequiredMarker(): Boolean? {
         val member = this.member
         val byAnnotation = this.getAnnotation(JsonProperty::class.java)?.required
@@ -217,8 +203,4 @@ internal class KotlinAnnotationIntrospector(
         return !paramType.isMarkedNullable && !param.isOptional &&
             !(isPrimitive && !context.isEnabled(DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES))
     }
-
-    companion object {
-        val UNIT_TYPE: KType = Unit::class.createType()
-    }
 }