qcacld-3.0: UMAC: Remove obsolete files sch_debug.[c|h]

Remove obsolete file sch_debug.[c|h].

Change-Id: I97083e0eb1f97e070e0033e454e4ca30ad51974e
CRs-Fixed: 2020798

Kbuild

@@ -596,7 +596,6 @@ endif
 MAC_SCH_OBJS := $(MAC_SRC_DIR)/pe/sch/sch_api.o \
 		$(MAC_SRC_DIR)/pe/sch/sch_beacon_gen.o \
 		$(MAC_SRC_DIR)/pe/sch/sch_beacon_process.o \
-		$(MAC_SRC_DIR)/pe/sch/sch_debug.o \
 		$(MAC_SRC_DIR)/pe/sch/sch_message.o
 
 MAC_RRM_OBJS :=	$(MAC_SRC_DIR)/pe/rrm/rrm_api.o