remove .piopm in both tl install folders

Author: Jason2866

platform.py

@@ -308,7 +308,9 @@ def _install_tl_install(self, version: str) -> bool:
                     # Copy tool-esp_install content to tl-install location
                     if safe_copy_directory(tl_install_path, old_tl_install_path):
                         logger.info(f"Content copied from {tl_install_name} to old tl-install location")
-                        tl_piopm_path = os.path.join(old_tl_install_path, ".piopm")
+                        old_tl_piopm_path = os.path.join(old_tl_install_path, ".piopm")
+                        safe_remove_file(old_tl_piopm_path)
+                        tl_piopm_path = os.path.join(tl_install_path, ".piopm")
                         safe_remove_file(tl_piopm_path)
                     else:
                         logger.warning(f"Failed to copy content to old tl-install location")