firefox: remove unneeded quota patch, use system icu

package/firefox/Makefile

@@ -57,6 +57,7 @@ CONFIGURE_ENV+=		CROSS_COMPILE=1 \
 			ac_cv_sqlite_dbstat_vtab=yes
 CONFIGURE_ARGS+=	--enable-application=browser \
 			--enable-official-branding \
+			--with-system-icu \
 			--with-system-zlib \
 			--with-system-bz2 \
 			--with-system-png \

package/firefox/patches/patch-xpcom_io_nsLocalFileUnix_cpp

@@ -1,16 +0,0 @@
---- firefox-42.0.orig/xpcom/io/nsLocalFileUnix.cpp	2015-10-29 23:18:01.000000000 +0100
-+++ firefox-42.0/xpcom/io/nsLocalFileUnix.cpp	2015-12-17 18:31:49.639751737 +0100
-@@ -1407,8 +1407,13 @@ nsLocalFile::GetDiskSpaceAvailable(int64
-       && dq.dqb_bhardlimit) {
-     int64_t QuotaSpaceAvailable = 0;
-     // dqb_bhardlimit is count of BLOCK_SIZE blocks, dqb_curspace is bytes
-+#if defined(__UCLIBC__)
-+    if ((BLOCK_SIZE * dq.dqb_bhardlimit) > dq.dqb_curblocks)
-+      QuotaSpaceAvailable = int64_t(fs_buf.F_BSIZE * (dq.dqb_bhardlimit - dq.dqb_curblocks));
-+#else
-     if ((BLOCK_SIZE * dq.dqb_bhardlimit) > dq.dqb_curspace)
-       QuotaSpaceAvailable = int64_t(BLOCK_SIZE * dq.dqb_bhardlimit - dq.dqb_curspace);
-+#endif
-     if (QuotaSpaceAvailable < *aDiskSpaceAvailable) {
-       *aDiskSpaceAvailable = QuotaSpaceAvailable;
-     }