Remove get_schema_version method

Issue #9541.

gramps/gen/db/generic.py

@@ -50,7 +50,6 @@ from ..errors import HandleError
 from ..utils.callback import Callback
 from ..updatecallback import UpdateCallback
 from .bookmarks import DbBookmarks
-from . import exceptions
 
 from ..utils.id import create_id
 from ..lib.researcher import Researcher
@@ -592,12 +591,6 @@ class DbGeneric(DbWriteBase, DbReadBase, UpdateCallback, Callback):
         """
         If update is False: then don't update any files
         """
-        db_schema_version = self.get_schema_version(directory)
-        current_schema_version = self.VERSION[0]
-        if db_schema_version != current_schema_version:
-            raise exceptions.DbVersionError(str(db_schema_version),
-                                            str(current_schema_version),
-                                            str(current_schema_version))
         # run backend-specific code:
         self._initialize(directory)
 
@@ -770,13 +763,6 @@ class DbGeneric(DbWriteBase, DbReadBase, UpdateCallback, Callback):
         """Return True when the file has a supported version."""
         return True
 
-    def get_schema_version(self, directory=None):
-        """
-        Get the version of the schema that the database was created
-        under. Assumes 18, if not found.
-        """
-        raise NotImplementedError
-
     def _get_table_func(self, table=None, func=None):
         """
         Private implementation of get_table_func.

gramps/plugins/db/dbapi/dbapi.py

@@ -53,24 +53,6 @@ class DBAPI(DbGeneric):
     """
     Database backends class for DB-API 2.0 databases
     """
-    def get_schema_version(self, directory=None):
-        """
-        Get the version of the schema that the database was created
-        under. Assumes 18, if not found.
-        """
-        if directory is None:
-            directory = self._directory
-        version = 18
-        if directory:
-            versionpath = os.path.join(directory, "schemaversion.txt")
-            if os.path.exists(versionpath):
-                with open(versionpath, "r") as version_file:
-                    version = version_file.read()
-                version = int(version)
-            else:
-                LOG.info("Missing '%s'. Assuming version 18.", versionpath)
-        return version
-
     def write_version(self, directory):
         """Write files for a newly created DB."""
         _LOG.debug("Write schema version file to %s", str(self.VERSION[0]))