csection: We can save execution time by removing judgments.

test:
We can use qemu for testing.

compiling
make distclean -j20; ./tools/configure.sh -l qemu-armv8a:nsh_smp ;make -j20
running
qemu-system-aarch64 -cpu cortex-a53 -smp 4 -nographic -machine virt,virtualization=on,gic-version=3 -net none -chardev stdio,id=con,mux=on -serial chardev:con -mon chardev=con,mode=readline -kernel ./nuttx

or
compiling
make distclean -j20; ./tools/configure.sh -l sabre-6quad:smp ;make -j20
running
qemu-system-arm  -semihosting -M sabrelite -m 1024 -smp 4 -kernel nuttx/nuttx -nographic

Signed-off-by: hujun5 <hujun5@xiaomi.com>