Here's what happens when the compiz package is getting removed:
$ sudo pkg remove compiz
Checking integrity... done (0 conflicting)
Deinstallation has been requested for the following 1 packages (of 0 packages in the universe):
Installed packages to be REMOVED:
Number of packages to be removed: 1
The operation will free 7 MiB.
Proceed with deinstalling packages? [y/N]: y
[1/1] Deinstalling compiz-0.8.8_9...
[1/1] Deleting files for compiz-0.8.8_9: 100%
I/O warning : failed to load external entity "/usr/local/etc/gconf/schemas/gwd.schemas"
Failed to open `/usr/local/etc/gconf/schemas/gwd.schemas': No such file or directory
I/O warning : failed to load external entity "/usr/local/etc/gconf/schemas/compiz-zoom.schemas"
Failed to open `/usr/local/etc/gconf/schemas/compiz-zoom.schemas': No such file or directory