Revert "firefox: fix adobe-flash-plugin crashes"

This reverts commit d7d84ec79b.

Currently fails to build thus revert this patch.

srcpkgs/firefox/files/mozconfig

@@ -47,5 +47,6 @@ ac_add_options BINDGEN_CFLAGS="-I/usr/include/nspr -I/usr/include/pixman-1"
 # needed to enable stylo at runtime by default
 ac_add_options --enable-stylo
 
+ac_add_options --enable-release
 ac_add_options --enable-official-branding
 ac_add_options --enable-application=browser

srcpkgs/firefox/template

@@ -1,7 +1,7 @@
 # Template build file for 'firefox'.
 pkgname=firefox
 version=58.0.2
-revision=2
+revision=1
 short_desc="Mozilla Firefox web browser"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
 homepage="https://www.mozilla.org/firefox/"
@@ -50,7 +50,6 @@ do_build() {
 	*-musl)
 		echo "ac_add_options --disable-jemalloc" >>.mozconfig
 		echo "ac_add_options --disable-gold" >>.mozconfig
-		echo "ac_add_options --enable-release" >>.mozconfig
 		;;
 	esac