avr_gcc: remove invalid provides entry
avr_gcc: remove invalid provides entry

The binary is not in $binDir anymore so there is no need to have an
entry for it.

moochris/haikuports,moochris/haikuports,haikuports/haikuports,Begasus/haikuports,haikuports/haikuports,haikuports/haikuports,Begasus/haikuports,Begasus/haikuports,moochris/haikuports,haikuports/haikuports,haikuports/haikuports,Begasus/haikuports,nielx/haikuports,nielx/haikuports,nielx/haikuports,Begasus/haikuports