Revert "fix remove-project for prebuilts/misc"

This reverts commit f3bf33aa29cef3a2c404ffe020664465a713bcbd.
Revert "Revert "track CM prebuilts/misc/ now that it has ccache 3.1.9 also""

This reverts commit 60e32ec0ec0b16a6cf610148c967cb808d059ee7.

CM ccache seems to work now.