Remove Gitter chat badge from README

[djsmith85]

Removed Gitter chat badge from README.

[github-actions]

Checkmarx One – Scan Summary & Details – 42439b32-3cb0-42ce-8782-07ecf7e3b045

Great job! No new security vulnerabilities introduced in this pull request

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.46%. Comparing base (3400d5f) to head (6c7b747).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6612   +/-   ##
=======================================
  Coverage   86.46%   86.46%           
=======================================
  Files         788      788           
  Lines       56969    56969           
  Branches     8301     8301           
=======================================
  Hits        49258    49258           
  Misses       4829     4829           
  Partials     2882     2882           

Flag	Coverage Δ
app-data	17.49% <ø> (ø)
app-ui-auth-tools	20.89% <ø> (ø)
app-ui-platform	15.08% <ø> (ø)
app-ui-vault	25.80% <ø> (ø)
authenticator	6.70% <ø> (ø)
lib-core-network-bridge	4.31% <ø> (ø)
lib-data-ui	0.93% <ø> (ø)

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