Remove requirement of State field (#7033)

# Description & Issue number it closes 
<!-- Please include a summary of the changes and the related issue.
Please also include relevant motivation and context. -->

You can't force a requirement on state, as not every address has a State
associated with it.

The JavaScript is also partially broken on this page.

Will resolve #7032 if completed.

## Screenshots (if appropriate)
<!-- Before and after --> 

See #7032

## How to test the changes?

Manually testing.

## Type of change

- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] This change requires a documentation update

# How Has This Been Tested?

<!-- Please describe the tests that you ran to verify your changes.
Provide instructions so we can reproduce. Please also list any relevant
details for your test configuration -->

Manual testing.

# Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

src/external/templates/registration/family-register.php

@@ -49,7 +49,7 @@
                             <input id="familyCity" name="familyCity" class="form-control" placeholder="<?= gettext('City') ?>"  required value="<?= SystemConfig::getValue('sDefaultCity') ?>">
                         </div>
                         <div class="col-lg-6">
-                            <input id="familyStateInput" name="familyState" class="form-control" placeholder="<?= gettext('State') ?>" required value="<?= SystemConfig::getValue('sDefaultState') ?>">
+                            <input id="familyStateInput" name="familyState" class="form-control" placeholder="<?= gettext('State') ?>" value="<?= SystemConfig::getValue('sDefaultState') ?>">
                             <select id="familyStateSelect" name="familyState" class="form-control select2 hidden" data-system-default="<?= SystemConfig::getValue('sDefaultState')?>">
                             </select>
                             </select>