remove the patch for st for arm

-Common subdirectories: st-1.9/docs and st-1.9.patch/docs
-Common subdirectories: st-1.9/examples and st-1.9.patch/examples
-Common subdirectories: st-1.9/extensions and st-1.9.patch/extensions
-diff -u st-1.9/Makefile st-1.9.patch/Makefile
---- st-1.9/Makefile	2009-10-02 06:55:03.000000000 +0800
-+++ st-1.9.patch/Makefile	2014-02-28 23:38:39.298697732 +0800
-@@ -57,10 +57,10 @@
- # possible compilation options.
- ##########################
- 
--CC          = cc
--AR          = ar
--LD          = ld
--RANLIB      = ranlib
-+CC          ?= cc
-+AR          ?= ar
-+LD          ?= ld
-+RANLIB      ?= ranlib
- LN          = ln
- 
- SHELL       = /bin/sh

@@ -185,7 +185,6 @@ else
     (
         rm -rf ${SRS_OBJS}/st-1.9 && cd ${SRS_OBJS} && 
         unzip -q ../3rdparty/st-1.9.zip && cd st-1.9 && 
-        patch -p1 < ../../3rdparty/1.st.arm.Makefile.patch && 
         make linux-debug &&
         cd .. && rm -f st && ln -sf st-1.9/obj st
     )