Removing executable bit from non-executable files.

[dhermes]

@tseaver I promise I'm not crazy, I originally noticed that the .proto files were executable when moving things around for v1beta3 datastore changes.

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@stephenplusplus @callmehiphop Any idea why the docs resources (which were likely just copied from gcloud-node) have the executable bits set? Should I leave them in place?

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Can verify which files had the bit set with:

ls -alFG $(git ls-files) | grep -e '*$'

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After this change it leaves

scripts/custom_pip_install.sh*
scripts/merge.sh*
scripts/pep8_on_repo.sh*
scripts/run_system_tests.sh*
scripts/update_docs.sh*
scripts/update_wheels_project.sh*

which all should be executable. We could probably also make our system test runner executable if we felt we needed it.

[stephenplusplus]

I'm not sure how they ended up being 755, but 644 is the right way to go.

[dhermes]

👍 Thanks

[tseaver]

LGTM