Remove comments from function/property implementation template

#KT-18539 Fixed

idea/testData/codeInsight/overrideImplement/generateMulti.kt.after

@@ -8,14 +8,14 @@ interface Some<T> {
 
 class SomeOther<S> : Some<S> {
     override fun someFoo() {
-        <selection><caret>TODO("not implemented") //To change body of created functions use File | Settings | File Templates.</selection>
+        <selection><caret>TODO("Not yet implemented")</selection>
     }
 
     override fun someGenericFoo(): S {
-        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+        TODO("Not yet implemented")
     }
 
     override fun someOtherFoo(): Int {
-        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+        TODO("Not yet implemented")
     }
 }