Remove smolagents installation from remote executors (#1274)

Author: albertvillanova

src/smolagents/remote_executors.py

@@ -59,7 +59,7 @@ def send_tools(self, tools: dict[str, Tool]):
             pkg
             for tool in tools.values()
             for pkg in tool.to_dict()["requirements"]
-            if pkg not in self.installed_packages
+            if pkg not in self.installed_packages + ["smolagents"]
         }
         if packages_to_install:
             self.installed_packages.extend(packages_to_install)
@@ -90,9 +90,9 @@ def __call__(self, code_action: str) -> tuple[Any, str, bool]:
         return output[0], output[1], is_final_answer
 
     def install_packages(self, additional_imports: list[str]):
-        additional_imports = additional_imports + ["smolagents"]
-        _, execution_logs = self.run_code_raise_errors(f"!pip install {' '.join(additional_imports)}")
-        self.logger.log(execution_logs)
+        if additional_imports:
+            _, execution_logs = self.run_code_raise_errors(f"!pip install {' '.join(additional_imports)}")
+            self.logger.log(execution_logs)
         return additional_imports