chore: remove redundant flags

Makefile

@@ -10,18 +10,14 @@ OBJCOPY = arm-none-eabi-objcopy
 
 LD_FILE = rtl8710.ld
 
-CFLAGS = -Wall -g -Os \
-         -mcpu=cortex-m4 -mthumb -mfloat-abi=soft \
-         -ffunction-sections -fdata-sections -flto \
-         -mlittle-endian -mthumb-interwork \
-         -ffreestanding -fsingle-precision-constant \
-         -Wstrict-aliasing=0 -nostartfiles \
+CFLAGS = -mcpu=cortex-m4 -mthumb -Os -flto \
+	-nostartfiles -ffreestanding \
+	-ffunction-sections -fdata-sections -Wl,--gc-sections \
 	-Wl,-T,$(LD_FILE) -u main \
-         -Wl,--gc-sections \
 	-Wl,--defsym=_RAM_ORIGIN=$(FIRMWARE_ADDRESS) \
 	-Wl,--defsym=_RAM_SIZE=$(RAM_SIZE) \
-		 -DBUFFER_ADDRESS=$(BUFFER_ADDRESS) \
-		 -Wl,--defsym=_WORK_AREA_START=$(WORK_AREA_START)
+	-Wl,--defsym=_WORK_AREA_START=$(WORK_AREA_START) \
+	-DBUFFER_ADDRESS=$(BUFFER_ADDRESS)
 
 SRC = rtl8710_flasher.c
 TARGET = rtl8710_flasher