fix(build system): Removes a duplicate file in angularFiles.js

[jbdeboer]

No description provided.

[geddski]

This has already been fixed in the build rewrite, #1544

[pkozlowski-opensource]

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[IgorMinar]

changed the commit message (Rakefile changes that don't affect end users should be categorized as "chore") and laded this as 33e00726e66c04758be651e7d1017a302230db9b