addons: vxlan: modinfo: remove vxlan-port validval

Signed-off-by: Julien Fortin <julien@cumulusnetworks.com>

ifupdown2/addons/vxlan.py

@@ -72,7 +72,6 @@ class vxlan(moduleBase):
                              'example': ['vxlan-purge-remotes yes'],},
                     'vxlan-port': {
                         'help': 'vxlan UDP port (transmitted to vxlan driver)',
-                        'validvals': ['<number>'],
                         'example': ['vxlan-port 4789'],
                         'validrange': ['1', '65536'],
                         'default': '4789',