Revert "x86: Enable -fstack-protector"

This reverts commit e0b4844a20ffd022a568abb4203b3f7c759c7ff5,
causes netd to crash.
diff --git a/libc/Android.mk b/libc/Android.mk
index 6a87f04..d8a4b1c 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -554,7 +554,7 @@
 GEN := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_so.o
 $(GEN): $(LOCAL_PATH)/arch-$(TARGET_ARCH)/bionic/crtbegin_so.S
 	@mkdir -p $(dir $@)
-	$(TARGET_CC) $(libc_crt_target_cflags) -fPIC -o $@ -c $<
+	$(TARGET_CC) $(libc_crt_target_cflags) -o $@ -c $<
 ALL_GENERATED_SOURCES += $(GEN)
 
 GEN := $(TARGET_OUT_STATIC_LIBRARIES)/crtend_so.o