build: remove leftover ZoL workaround

the executable bit is now properly tracked in our submodule, so this is
no longer needed.

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>

Makefile

@@ -145,8 +145,6 @@ $(ZFSDIR).prepared: ${ZFSSRC}
 	mkdir -p ${BUILD_DIR}/${MODULES}/${ZFSDIR}
 	cp -a ${ZFSSRC}/* ${BUILD_DIR}/${MODULES}/${ZFSDIR}
 	cd ${BUILD_DIR}/${MODULES}/${ZFSDIR}; for patch in ../../../${ZFSSRC}/../zfs-patches/*.patch; do patch -p1 < $${patch}; done
-	# temporarily since patch does not know about permissions, remove after 0.7.7 was merged properly
-	chmod +x ${BUILD_DIR}/${MODULES}/${ZFSDIR}/scripts/enum-extract.pl
 	touch $@
 
 .PHONY: upload