gsid: Strengthen neverallow by s/notdevfile_class_set/file_class_set/

We're not doing anything special with device files, so no point
excluding them from the neverallow rules.
Principle of KISS.

Bug: 181110285
Test: Build pass
Change-Id: I0e203665aa2134579d97b580cb9301755edb62b1
1 file changed