Removing catch of UnboundLocalError exception

The previous commit added an exception catch for
UnboundLocalError because regression testing
revealed a failure in handling the Asia/Jerusalem
timezone. This timezone uses the version 3 data
format. A new issue MythTV#672 was opened to ask for
support for version 3. Since that issue has now
been fixed, we no longer need to catch
UnboundLocalError.

Refs: MythTV#654

mythtv/programs/scripts/metadata/Television/tvmaze.py

@@ -233,11 +233,8 @@ def buildNumbers(args, opts):
                 else:
                     show_tz = None
                 dtInTgtZone = dtInLocalZone.astimezone(posixtzinfo(show_tz))
-                # For at least one timezone, the following exception may be thrown.
-                # UnboundLocalError: local variable 'ttmfmt' referenced before assignment
-                # Example:  tvmaze.py --debug -N "The Masked Singer" "2022-11-24 19:00:00"
 
-            except (ValueError, AttributeError, UnboundLocalError) as e:
+            except (ValueError, AttributeError) as e:
                 if opts.debug:
                     print('show_tz =%s, except = %s' % (show_tz, e))
                 dtInTgtZone = None