Delete unused file

compiler/test_gen/src/helpers/wasm_test_platform.c

@@ -1,23 +0,0 @@
-#include <stdlib.h>
-extern void* test_wrapper();
-
-void* roc_alloc(size_t size, unsigned int alignment) {
-    return malloc(size);
-}
-
-void* roc_realloc(void* ptr, size_t old_size, size_t new_size, unsigned int alignment) {
-  return realloc(ptr, new_size);
-}
-
-void roc_dealloc(void* ptr, unsigned int alignment) {
-    free(ptr);
-}
-
-// Having a main function seems to make it easier to convince tools
-// to include everything in the output binary.
-// Using C as the source language makes it easier to convince them
-// to include libc for wasm target, not host.
-// The returned int is the memory address of the test result
-int main(void) {
-    return test_wrapper();
-}