Remove unused screenshot code

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>

src/compton.c

@@ -3210,37 +3210,6 @@ session_destroy(session_t *ps) {
   log_deinit_tls();
 }
 
-#if 0
-/**
- * @brief Dump the given data to a file.
- */
-static inline bool
-write_binary_data(const char *path, const unsigned char *data, int length) {
-  if (!data)
-    return false;
-  FILE *f = fopen(path, "wb");
-  if (!f) {
-    log_error("Failed to open \"%s\" for writing.", path);
-    return false;
-  }
-  int wrote_len = fwrite(data, sizeof(unsigned char), length, f);
-  fclose(f);
-  if (wrote_len != length) {
-    log_error("Failed to write all blocks: %d / %d to %s",
-        wrote_len, length, path);
-    return false;
-  }
-  return true;
-}
-static inline void
-dump_img(session_t *ps) {
-  int len = 0;
-  unsigned char *d = glx_take_screenshot(ps, &len);
-  write_binary_data("/tmp/dump.raw", d, len);
-  free(d);
-}
-#endif
-
 /**
  * Do the actual work.
  *