Remove terminate method from SeriousPythonAndroid

The terminate() override and its related comments were removed from SeriousPythonAndroid. This simplifies the class and removes the process termination logic previously handled via methodChannel.

Author: FeodorFitsner

src/serious_python_android/lib/serious_python_android.dart

@@ -96,12 +96,4 @@ class SeriousPythonAndroid extends SeriousPythonPlatform {
     return runPythonProgramFFI(
         sync ?? false, "libpython3.12.so", appPath, script ?? "");
   }
-
-  @override
-  void terminate() {
-    // CPython is embedded in-process; after Flutter engine/Dart isolate restarts,
-    // native CPython state (including the GIL) can be left in a bad state.
-    // Killing the process is the most reliable way to guarantee a clean start.
-    methodChannel.invokeMethod<String>('terminate');
-  }
 }