tcm_fc: Makefile cleanups

This patch removes the unnecessary EXTRA_CFLAGS includes, and drops the
unused -DTCM_FC_DEBUG define.
Reported-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>

drivers/target/tcm_fc/Makefile

-EXTRA_CFLAGS += -I$(srctree)/drivers/target/ \
-		-I$(srctree)/drivers/scsi/ \
-		-I$(srctree)/include/scsi/ \
-		-I$(srctree)/drivers/target/tcm_fc/
-
 tcm_fc-y +=		tfc_cmd.o \
 			tfc_conf.o \
 			tfc_io.o \
 			tfc_sess.o
 
 obj-$(CONFIG_TCM_FC)	+= tcm_fc.o
-
-ifdef CONFIGFS_TCM_FC_DEBUG
-EXTRA_CFLAGS	+= -DTCM_FC_DEBUG
-endif