many fixes

runtime/src/vx_tex.S

@@ -1,9 +0,0 @@
-#include <VX_config.h>
-
-@ .type vx_tex_ld, @function
-@ .global vx_tex_ld
-@ vx_tex_ld:
-@     slli	a1,a1,0x8
-@     or	a1,a1,a0
-@     .word 0x5ae7952b
-@     ret

runtime/src/vx_tex.c

@@ -1,13 +0,0 @@
-#include <vx_tex.h>
-#include <vx_intrinsics.h>
-#include <inttypes.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define NUM_CORES_MAX 32
-
-int vx_tex(unsigned t, unsigned u, unsigned v, unsigned lod){
-    return vx_tex_ld(t,u,v,lod);
-}