Drop 'propertyDelegated' convention (without additional deprecation ceremony).

idea/testData/findUsages/kotlin/conventions/propertyDelegatedFunction.0.kt

@@ -1,16 +0,0 @@
-// PSI_ELEMENT: org.jetbrains.kotlin.psi.KtNamedFunction
-// OPTIONS: usages
-
-import kotlin.reflect.KProperty
-
-class Delegate() {
-    operator fun getValue(thisRef: Any?, property: KProperty<*>): String = ":)"
-
-    operator fun setValue(thisRef: Any?, property: KProperty<*>, value: String) {
-    }
-
-    operator fun <caret>propertyDelegated(property: KProperty<*>) {
-    }
-}
-
-var p: String by Delegate()

idea/testData/findUsages/kotlin/conventions/propertyDelegatedFunction.log

@@ -1,4 +0,0 @@
-Resolved by Delegate()
-Searched references to Delegate
-Used plain search of Delegate.propertyDelegated(property: KProperty<*>) in LocalSearchScope:
-    CLASS:Delegate

idea/testData/findUsages/kotlin/conventions/propertyDelegatedFunction.results.txt

@@ -1 +0,0 @@
-Property delegation 16 var p: String by Delegate()

idea/testData/resolve/references/delegatedPropertyAccessors/inSource/getSetPropertyDelegatedExtension.kt

@@ -1,13 +0,0 @@
-var x: Int <caret>by Foo()
-
-class Foo
-
-fun Foo.getValue(_this: Any?, p: Any?): Int = 1
-fun Foo.setValue(_this: Any?, p: Any?, val: Any?) {}
-fun Foo.propertyDelegated(p: Any?) {}
-
-// MULTIRESOLVE
-// REF: (for Foo in <root>).getValue(Any?, Any?)
-// REF: (for Foo in <root>).setValue(Any?, Any?, Any?)
-// REF: (for Foo in <root>).propertyDelegated(Any?)
-

idea/testData/resolve/references/delegatedPropertyAccessors/inSource/getSetPropertyDelegatedMember.kt

@@ -1,13 +0,0 @@
-var x: Int <caret>by Foo()
-
-class Foo {
-    fun getValue(_this: Any?, p: Any?): Int = 1
-    fun setValue(_this: Any?, p: Any?, val: Any?) {}
-    fun propertyDelegated(p: Any?)
-}
-
-// MULTIRESOLVE
-// REF: (in Foo).getValue(Any?, Any?)
-// REF: (in Foo).setValue(Any?, Any?, Any?)
-// REF: (in Foo).propertyDelegated(Any?)
-