Kotlin code generation example: fix dependency version

Author: yanex

gradle/kotlin-code-generation/build.gradle

@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.1-SNAPSHOT'
+    ext.kotlin_version = '1.1.2-3'
 
     repositories {
         jcenter()
@@ -13,7 +13,6 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
-        mavenLocal()
         maven { url 'https://jitpack.io' }
     }
 }