FIO-10483: update circle remove to circle xmark

[ZenMasterJacob20011]

Link to Jira Ticket

https://formio.atlassian.net/browse/FIO-10483

Description

What changed?

Updated circle-remove to circle-xmark

Why have you chosen this solution?

circle-remove is a old class name from fontawesome 3.x and fontawsome is on 7.x now and uses circle-xmark instead

Breaking Changes / Backwards Compatibility

N/A

Dependencies

formio/bootstrap#137

How has this PR been tested?

manually tested

Checklist:

• I have completed the above PR template
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (if applicable)
• My changes generate no new warnings
• My changes include tests that prove my fix is effective (or that my feature works as intended)
• New and existing unit/integration tests pass locally with my changes
• Any dependent changes have corresponding PRs that are listed above