Remove unneeded libfaad files from SOURCE.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27320 a1c6a512-1295-4272-9138-f99709370657

apps/codecs/libfaad/SOURCES

@@ -2,22 +2,16 @@ bits.c
 common.c
 decoder.c
 drc.c
-drm_dec.c
 error.c
 filtbank.c
-hcr.c
 huffman.c
-ic_predict.c
 is.c
-lt_predict.c
 mp4.c
 ms.c
-output.c
 pns.c
 ps_dec.c
 ps_syntax.c
 pulse.c
-rvlc.c
 sbr_dct.c
 sbr_dec.c
 sbr_e_nf.c