jf-common.mk: remove unused ramdisk files

Change-Id: I0ef5635e935fa3d8e0c66b60399e8252234bd341

Conflicts:
	jf-common.mk
Revert "move loki from msm8960-common"

This reverts commit b4ebb439faffc2f31dcf14e06f73aab0884af071.