more reduce the time of detecting build order. Thanks to Ignacio Piantanida for the patch.

http://hipbyte.myjetbrains.com/youtrack/issue/RM-466
Revert "use a cached file dependencies in order to reduce the build time"

This reverts commit ee514286cf69aa3ee1b15aae1d5e58f6540e0781.

Now, detecting build order is much faster without cache by previous commit.
So, let's revert this commit.