Remove comments from function/property implementation template

#KT-18539 Fixed

idea/testData/quickfix/createFromUsage/createFunction/call/approximateLocalClassRuntime.kt.after

@@ -10,5 +10,5 @@ fun main(args: Array<String>) {
 }
 
 private fun <E> List<E>.foo(function: () -> A) {
-    TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+    TODO("Not yet implemented")
 }