ghc-doc: remove noarch

srcpkgs/ghc/template

@@ -2,7 +2,7 @@
 pkgname=ghc
 # Keep this synchronized with http://www.stackage.org/lts
 version=8.8.4
-revision=1
+revision=2
 wrksrc="ghc-${version%[!0-9]}"
 build_style=gnu-configure
 configure_args="--with-system-libffi"
@@ -86,7 +86,6 @@ post_install() {
 }
 
 ghc-doc_package() {
-	archs=noarch
 	short_desc+=" -- documentation"
 	pkg_install() {
 		vmove usr/share/doc