Makefile.target: Remove unnecessary dependency rules

Remove some dependency rules which aren't necessary (the automatically
generated .d files cover all these). These were leftovers from dyngen
days, when the object files also had a dependency on some generated
files.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

Makefile.target

@@ -92,12 +92,6 @@ tci-dis.o: QEMU_CFLAGS += -I$(SRC_PATH)/tcg -I$(SRC_PATH)/tcg/tci
 
 $(libobj-y): $(GENERATED_HEADERS)
 
-translate.o: translate.c cpu.h
-
-translate-all.o: translate-all.c cpu.h
-
-tcg/tcg.o: cpu.h
-
 # HELPER_CFLAGS is used for all the code compiled with static register
 # variables
 op_helper.o ldst_helper.o user-exec.o: QEMU_CFLAGS += $(HELPER_CFLAGS)