Remove g_needs_dynamic_alloc global

Author: abrown

libc-top-half/musl/arch/wasm32/pthread_arch.h

@@ -1,9 +1,9 @@
 uintptr_t __get_tp(void) {
 #if _REENTRANT
   int val;
-  __asm__(".globaltype g_needs_dynamic_alloc, i32\n"
-          "global.get __wasilibc_pthread_self\n"
-          "local.set %0" : "=r" (val));
+  __asm__("global.get __wasilibc_pthread_self\n"
+          "local.set %0"
+          : "=r"(val));
   return val;
 #else
   return 0;