package/libmad: don't install .pc in target

We explicitly remove pkg-config files from target in the target-finalize
step, and our pkg-config looks for .pc files from staging, not target.

So, explicitly installing the .pc in target is useless.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libmad/libmad.mk

@@ -23,14 +23,8 @@ define LIBMAD_INSTALL_STAGING_PC
 		$(STAGING_DIR)/usr/lib/pkgconfig/mad.pc
 endef
 
-define LIBMAD_INSTALL_TARGET_PC
-	$(INSTALL) -D package/libmad/mad.pc \
-		$(TARGET_DIR)/usr/lib/pkgconfig/mad.pc
-endef
-
 LIBMAD_POST_PATCH_HOOKS += LIBMAD_PREVENT_AUTOMAKE
 LIBMAD_POST_INSTALL_STAGING_HOOKS += LIBMAD_INSTALL_STAGING_PC
-LIBMAD_POST_INSTALL_TARGET_HOOKS += LIBMAD_INSTALL_TARGET_PC
 
 LIBMAD_CONF_OPTS = \
 	--disable-debugging \