Remove comments from function/property implementation template

#KT-18539 Fixed

idea/testData/quickfix/implement/sealedWithConflict.kt.after

@@ -11,7 +11,7 @@ sealed class Base {
 
     class BaseImpl1 : Base() {
         override fun foo(): Int {
-            TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+            TODO("Not yet implemented")
         }
     }
 }