[PLUGIN-430] Remove unused field :ReferenceName: from GCS/BQ argument setter

[psainics]

Remove unused field :ReferenceName from GCS/BQ argument setter

Jira : PLUGIN-430

Description

GCS/BQ argument setters have field :ReferenceName: mentioned in the docs and the plugin design file, being a action plugin the field is not used in the code hence it's mention in the docs may cause confusion.

UI Field

• Modified BigQueryArgumentSetter-action.json

• Modified GCSArgumentSetter-action.json

  As the field was not used in code removing them from the plugin design does not cause and visual change on plugin UI on the brower.

Docs

• Modified BigQueryArgumentSetter-action.md
• Modified GCSArgumentSetter-action.md

Code change

• No Changes made to source files (.java)

Unit Tests

• No Changes made to unit tests.