Nuttx: remove -Wframe-larger-than=1024

The build fails when modules override this flag with a larger value,
and this lower value is still checked. The new flag seems to be in
addition to the old flag, not a replacement.

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

makefiles/toolchain_gnu-arm-eabi.mk

@@ -138,7 +138,6 @@ ARCHWARNINGS		 = -Wall \
 			   -Wdouble-promotion \
 			   -Wshadow \
 			   -Wfloat-equal \
-			   -Wframe-larger-than=1024 \
 			   -Wpointer-arith \
 			   -Wlogical-op \
 			   -Wmissing-declarations \