remove spurious continue in _bracket_info()

this if branch was never true probably because of a typo (the author probably meant to compare axis.minimum with 'axis_min'  instead of 'axis_max'), besides it would be incorrect to ignore such an always-true axis rule.

Lib/glyphsLib/classes.py

@@ -3948,9 +3948,6 @@ def _bracket_info(self, axes):
                     axis_min = float(axis_min)
                 if isinstance(axis_max, str):
                     axis_max = float(axis_max)
-                if axis_max == axis.minimum and axis_max == axis.maximum:
-                    # It's full range, ignore it.
-                    continue
                 info[axis.tag] = (axis_min, axis_max)
             return info