[pygobject] tests: Remove metapath hack to import when uninstalled

[Christoph Reiter <creiter src gnome org>]

commit 030aa5f5db380efa73802cb92cb92d156c3dc860
Author: Christoph Reiter <reiter christoph gmail com>
Date:   Fri Nov 6 15:48:56 2020 +0100

    tests: Remove metapath hack to import when uninstalled
    
    This was required for Python 2 where Python didn't import our built modules
    in the build dir because there is no __init__.py. In Python 3 this just works.
    
    Tested with setup.py/pytest/meson

 tests/__init__.py | 23 -----------------------
 1 file changed, 23 deletions(-)
---
diff --git a/tests/__init__.py b/tests/__init__.py
index 44068d2c..b96f8a8d 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -5,29 +5,6 @@ import signal
 import subprocess
 import atexit
 import warnings
-import imp
-
-
-class GIImport:
-    def find_module(self, fullname, path=None):
-        if fullname in ('gi._gi', 'gi._gi_cairo'):
-            return self
-        return None
-
-    def load_module(self, name):
-        if name in sys.modules:
-            return sys.modules[name]
-        fp, pathname, description = imp.find_module(name.split('.')[-1])
-        try:
-            module = imp.load_module(name, fp, pathname, description)
-        finally:
-            if fp:
-                fp.close()
-        sys.modules[name] = module
-        return module
-
-
-sys.meta_path.insert(0, GIImport())
 
 
 def init_test_environ():