Removed duplicate flag

Author: danielinux

test-app/CMakeLists.txt

@@ -120,7 +120,7 @@ if(BUILD_TEST_APPS)
     target_compile_definitions(image PRIVATE TARGET_${WOLFBOOT_TARGET}
                                                 ${TEST_APP_COMPILE_DEFINITIONS} ${WOLFBOOT_DEFS})
 
-    target_compile_options(image PRIVATE -Wall -Wstack-usage=1024 -ffreestanding -Wno-unused -nostartfiles -fomit-frame-pointer
+    target_compile_options(image PRIVATE -Wall -Wstack-usage=1024 -ffreestanding -Wno-unused -fomit-frame-pointer
                                             -nostartfiles)
 
     if(WOLFBOOT_TARGET STREQUAL "sim")