Remove references to groovy in packaging tests

qa/vagrant/src/test/resources/packaging/tests/example/scripts/is_guide.mustache

@@ -3,7 +3,7 @@
     "script": {
       "script": {
         "file": "is_guide",
-        "lang": "groovy"
+        "lang": "painless"
       }
     }
   }

qa/vagrant/src/test/resources/packaging/tests/module_and_plugin_test_cases.bash

@@ -255,10 +255,6 @@ fi
     check_secure_module lang-expression antlr4-runtime-*.jar asm-5.0.4.jar asm-commons-*.jar asm-tree-*.jar lucene-expressions-*.jar
 }
 
-@test "[$GROUP] check lang-groovy module" {
-    check_secure_module lang-groovy groovy-*-indy.jar
-}
-
 @test "[$GROUP] check lang-mustache module" {
     check_secure_module lang-mustache compiler-*.jar
 }