Remove additional_languages from generated .bazelproject file

Which might not be supported in IntelliJ community version

Change-Id: Ica6770a33769a47627bd1b0b871e7086fe1b2933
diff --git a/tools/dev/bin/onos-gen-bazel-project b/tools/dev/bin/onos-gen-bazel-project
index 96cfc0c..0c33da1 100755
--- a/tools/dev/bin/onos-gen-bazel-project
+++ b/tools/dev/bin/onos-gen-bazel-project
@@ -16,9 +16,6 @@
 TEMPLATE = """# Autogenerated with {script_name}
 workspace_type: java
 java_language_level: {language_level}
-additional_languages:
-  python
-  javascript
 
 directories:
   .