Removed order file use flags from being passed to cflags

The orderfile use flags are unused as cflags causing warnings which becomes errors in some order file builds
In addition, I fixed the test cases so it only looks at ldflags not cflags for orderfile use flags.

Test: mma build/soong
Output: #### build completed successfully (05:14 (mm:ss)) ####

Change-Id: I2a2d846d6688fd5256cf753267c000ff054d56f1