remove UNIQUEIDENTIFIER from the vendored ibis datatypes (googleapis#1379)

This type has been removed in sqlglot head
tobymao/sqlglot@b12aba9#diff-7857fedd1d1451b1b9a5b8efaa1cc292c02e7ee4f0d04d7e2f9d5bfb9565802c.

Author: shobsi

third_party/bigframes_vendored/ibis/backends/sql/datatypes.py

@@ -63,7 +63,6 @@
     typecode.VARBINARY: dt.Binary,
     typecode.VARCHAR: dt.String,
     typecode.VARIANT: dt.JSON,
-    typecode.UNIQUEIDENTIFIER: dt.UUID,
     typecode.SET: partial(dt.Array, dt.string),
     #############################
     # Unsupported sqlglot types #