mutt: get rid of unnecessary cross workarounds.

srcpkgs/mutt/template

@@ -1,7 +1,7 @@
 # Template file for 'mutt'
 pkgname=mutt
 version=1.5.24
-revision=1
+revision=2
 build_style=gnu-configure
 configure_args="--enable-pop --enable-imap --enable-smtp --enable-hcache
  --enable-gpgme --with-regex --with-idn --with-ssl --with-sasl
@@ -39,9 +39,6 @@ pre_configure() {
 }
 
 pre_build() {
-	find -name Makefile -exec sed \
-		-e 's,-I/usr/include,,g' \
-		-e 's,${prefix}/include,,g' -i {} \;
 	make CC="$BUILD_CC" CFLAGS="$BUILD_CFLAGS" CPPFLAGS= mutt_md5
 	make CC="$BUILD_CC" CFLAGS="$BUILD_CFLAGS" CPPFLAGS= -C doc
 }