Remove comments from function/property implementation template

#KT-18539 Fixed

idea/testData/codeInsight/overrideImplement/implementJavaRawSubclass/foo/Impl.kt.after

@@ -3,6 +3,6 @@ import foo.B
 
 class C : A() {
     override fun foo(x: MutableList<Any?>?, y: String?): B<*> {
-        <selection><caret>TODO("not implemented") //To change body of created functions use File | Settings | File Templates.</selection>
+        <selection><caret>TODO("Not yet implemented")</selection>
     }
 }