qcacld-3.0: Remove obsolete cds_mq.h and cds_mg.c files

After control path scheduler componentization cds_mq header and
source files are not needed hence delete obsolete cds_mq.h and
cds_mq.c files.

Change-Id: I9cef1086e805d0e5ea7b377d0a2de3512b452572
CRs-Fixed: 2000240

Kbuild

@@ -765,7 +765,6 @@ CDS_INC := 	-I$(WLAN_ROOT)/$(CDS_INC_DIR) \
 
 CDS_OBJS :=	$(CDS_SRC_DIR)/cds_api.o \
 		$(CDS_SRC_DIR)/cds_reg_service.o \
-		$(CDS_SRC_DIR)/cds_mq.o \
 		$(CDS_SRC_DIR)/cds_packet.o \
 		$(CDS_SRC_DIR)/cds_regdomain.o \
 		$(CDS_SRC_DIR)/cds_sched.o \