Remove size optimization for individual modules

It makes more sense to set the optimization flags on a platform basis
instead of individually for each module. This allows for different
optimization options for SITL, NuttX, Snapdragon, etc.

src/drivers/test_ppm/CMakeLists.txt

@@ -36,10 +36,9 @@ px4_add_module(
 	STACK_MAIN 1200
 	COMPILE_FLAGS
 		-Weffc++
-		-Os
 	SRCS
 		test_ppm.cpp
 	DEPENDS
 		platforms__common
 	)
-# vim: set noet ft=cmake fenc=utf-8 ff=unix : 
+# vim: set noet ft=cmake fenc=utf-8 ff=unix :