Revert python path update

src/backend/InvenTree/plugin/apps.py

@@ -5,15 +5,11 @@ The main code for plugin special sauce is in the plugin registry in `InvenTree/p
 """
 
 import logging
-import pathlib
-import sys
 
 from django.apps import AppConfig
-from django.conf import settings
 
 from maintenance_mode.core import set_maintenance_mode
 
-from InvenTree.config import get_plugin_dir
 from InvenTree.ready import canAppAccessDatabase, isInMainThread, isInWorkerThread
 from plugin import registry
 
@@ -27,8 +23,6 @@ class PluginAppConfig(AppConfig):
 
     def ready(self):
         """The ready method is extended to initialize plugins."""
-        self.update_python_path()
-
         if not isInMainThread() and not isInWorkerThread():
             return
 
@@ -48,29 +42,3 @@ class PluginAppConfig(AppConfig):
                 # drop out of maintenance
                 # makes sure we did not have an error in reloading and maintenance is still active
                 set_maintenance_mode(False)
-
-    def update_python_path(self):
-        """Update the PYTHONPATH to include the plugin directory."""
-        if not settings.PLUGINS_ENABLED:
-            # Custom plugins disabled - no need to update PYTHONPATH
-            logger.info('Custom plugins are not enabled')
-            return
-
-        plugin_dir = get_plugin_dir()
-
-        if not plugin_dir:
-            logger.warning('Plugins directory not specified')
-            return
-
-        if plugin_dir := get_plugin_dir():
-            path = pathlib.Path(plugin_dir)
-
-            if not path.exists():
-                try:
-                    path.mkdir(parents=True, exist_ok=True)
-                except Exception:
-                    logger.error(f'Failed to create plugin directory: {plugin_dir}')
-                    return
-
-            if plugin_dir not in sys.path:
-                sys.path.append(plugin_dir)