Remove comments from function/property implementation template

#KT-18539 Fixed

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

@@ -9,7 +9,7 @@ class Container {
 
     inner class BaseImpl : Base() {
         override fun foo(): String {
-            TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+            TODO("Not yet implemented")
         }
     }
 }