Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/9da6724d2e1a
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Revert "Merge pull request #16166 from yurenju/comm-makefile"

This is breaking make install-gaia

This reverts commit e6f7bfd0c2f1e302375951d3a612c117e94a054c, reversing
changes made to d999becbdc7962e6491c7a0bf4d619b44da69373.

Conflicts:
	build/applications-data.js
Bumping manifests a=b2g-bump