contribs: don't try to install the shared library if it doesn't exist, fix...

contribs: don't try to install the shared library if it doesn't exist, fix [22437]. Spotted by John Dalgliesh

extras/contrib/src/Makefile

@@ -879,7 +879,6 @@ faad: faad2-$(FAAD2_VERSION).tar.bz2
 
 .faad: faad
 	(cd $< && $(HOSTCC) ./configure $(HOSTCONF) --disable-shared --prefix=$(PREFIX) CFLAGS="-O3" && sed -i.orig "s/shrext_cmds/shrext/g" libtool && make -C libfaad && make -C libfaad install)
-	$(INSTALL_NAME)
 	touch $@
 
 CLEAN_FILE += .faad