Remove comments from function/property implementation template

#KT-18539 Fixed

idea/testData/quickfix/createFromUsage/createFunction/delegateAccessors/varMissingSet.kt.after

@@ -4,7 +4,7 @@ import kotlin.reflect.KProperty
 class F {
     operator fun getValue(x: X, property: KProperty<*>): Int = 1
     operator fun setValue(x: X, property: KProperty<*>, i: Int) {
-        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+        TODO("Not yet implemented")
     }
 }