Restored original opus sse files, excluded from Xcode

Also added line break in script for consistency, thanks @zturtleman

code/opus-1.2.1/celt/x86/celt_lpc_sse.c

@@ -29,8 +29,6 @@
 #include "config.h"
 #endif
 
-#if defined (__i386__) || defined(__x86_64__)
-
 #include <xmmintrin.h>
 #include <emmintrin.h>
 #include <smmintrin.h>
@@ -89,4 +87,3 @@ void celt_fir_sse4_1(const opus_val16 *x,
 }
 
 #endif
-#endif