modem: Makefile.am: remove unneeded CFLAGS and LIBS

Change-Id: I2bb04f526c4e3019c548786f2cdfb96b018826ec

src/host/layer23/src/modem/Makefile.am

@@ -8,9 +8,6 @@ AM_CFLAGS = \
 	$(LIBOSMOCORE_CFLAGS) \
 	$(LIBOSMOVTY_CFLAGS) \
 	$(LIBOSMOGSM_CFLAGS) \
-	$(LIBOSMOCODEC_CFLAGS) \
-	$(LIBGPS_CFLAGS) \
-	$(LIBLUA_CFLAGS) \
 	$(NULL)
 
 bin_PROGRAMS = modem
@@ -21,7 +18,4 @@ modem_LDADD = \
 	$(LIBOSMOCORE_LIBS) \
 	$(LIBOSMOVTY_LIBS) \
 	$(LIBOSMOGSM_LIBS) \
-	$(LIBOSMOCODEC_LIBS) \
-	$(LIBGPS_LIBS) \
-	$(LIBLUA_LIBS) \
 	$(NULL)