Removed BASE_PATH from configuration

Setting the BASE_PATH is a more involved process than just setting this variable.
To prevent surprises the option to set this via ENV variable was removed.

configuration/configuration.py

@@ -136,10 +136,6 @@ def _environ_get_and_map(variable_name: str, default: str | None = None, map_fn:
 if 'BANNER_LOGIN' in environ:
     BANNER_LOGIN = environ.get('BANNER_LOGIN', None)
 
-# Base URL path if accessing NetBox within a directory. For example, if installed at http://example.com/netbox/, set:
-# BASE_PATH = 'netbox/'
-BASE_PATH = environ.get('BASE_PATH', '')
-
 # Maximum number of days to retain logged changes. Set to 0 to retain changes indefinitely. (Default: 90)
 if 'CHANGELOG_RETENTION' in environ:
     CHANGELOG_RETENTION = _environ_get_and_map('CHANGELOG_RETENTION', None, _AS_INT)