Remove loading icon patch; should not be needed since libpng 1.6.3

PKGBUILD

@@ -23,15 +23,13 @@ optdepends=('networkmanager: Location detection via available WiFi networks'
 install=firefox.install
 options=('!emptydirs' '!makeflags')
 source=(https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/$pkgver/source/firefox-$pkgver.source.tar.bz2
-        mozconfig firefox.desktop firefox-install-dir.patch vendor.js shared-libs.patch
-        firefox-20.0.1-fixed-loading-icon.png)
+        mozconfig firefox.desktop firefox-install-dir.patch vendor.js shared-libs.patch)
 sha256sums=('86a6efa501e1b106b597a8506757f3a2db9d3a5cfcc61ea29a9ad0c834bea83b'
             'ad0e3c2916076774a8f3b66b8d515a4b1403a2bc789215b5180892537283e4ac'
             'd2a7610393ba259c35e3227b92e02ec91095a95189f56ac93ccdf6732772719c'
             'ded67e8204bd5e1c0c5771c0d2c84ff80c998e1543711e7cd804cfe29e8dd1b0'
             '4b50e9aec03432e21b44d18c4c97b2630bace606b033f7d556c9d3e3eb0f4fa4'
-            'e2b4a00d14f4ba69c62b3f9ef9908263fbab179ba8004197cbc67edbd916fdf1'
-            '68e3a5b47c6d175cc95b98b069a15205f027cab83af9e075818d38610feb6213')
+            'e2b4a00d14f4ba69c62b3f9ef9908263fbab179ba8004197cbc67edbd916fdf1')
 
 # Google API keys (see http://www.chromium.org/developers/how-tos/api-keys)
 # Note: These are for Arch Linux use ONLY. For your own distribution, please
@@ -64,11 +62,6 @@ prepare() {
   # configure script misdetects the preprocessor without an optimization level
   # https://bugs.archlinux.org/task/34644
   sed -i '/ac_cpp=/s/$CPPFLAGS/& -O2/' configure
-
-  # Fix tab loading icon (flickers with libpng 1.6)
-  # https://bugzilla.mozilla.org/show_bug.cgi?id=841734
-  cp "$srcdir/firefox-20.0.1-fixed-loading-icon.png" \
-    browser/themes/linux/tabbrowser/loading.png
 }
 
 build() {