Do not compile thrift for fbcode build.

Summary:
1. The thrift libraries do not need to be built anyore.
2. SSE is dynamically detected via
   1aae609b92

Test Plan: compile and build

Reviewers: sheki, emayanke

Reviewed By: sheki

CC: leveldb

Differential Revision: https://reviews.facebook.net/D7665

fbcode.gcc471.sh

@@ -10,9 +10,6 @@ TOOLCHAIN_EXECUTABLES="/mnt/gvfs/third-party/$TOOLCHAIN_REV/centos5.2-native"
 TOOLCHAIN_LIB_BASE="/mnt/gvfs/third-party/$TOOLCHAIN_REV/gcc-4.7.1-glibc-2.14.1"
 TOOL_JEMALLOC=jemalloc-3.0.0/69dc57c
 
-# always build thrift server
-export USE_THRIFT=1
-
 # location of libhdfs libraries
 if test "$USE_HDFS"; then
   JAVA_HOME="/usr/local/jdk-6u22-64"
@@ -37,9 +34,7 @@ LIBEVENT_INCLUDE=" -I $TOOLCHAIN_LIB_BASE/libevent/libevent-1.4.14b/91ddd43/incl
 LIBEVENT_LIBS=" -L $TOOLCHAIN_LIB_BASE/libevent/libevent-1.4.14b/91ddd43/lib"
 
 # use Intel SSE support for checksum calculations
-if test -z "$USE_SSE"; then
 export USE_SSE=" -msse -msse4.2 "
-fi
 
 CC="$TOOLCHAIN_EXECUTABLES/gcc/gcc-4.7.1-glibc-2.14.1/bin/gcc"
 CXX="$TOOLCHAIN_EXECUTABLES/gcc/gcc-4.7.1-glibc-2.14.1/bin/g++ $JINCLUDE $SNAPPY_INCLUDE $THRIFT_INCLUDE $LIBEVENT_INCLUDE"