chore(docs): remove unsupported credential types in deleteIdentityCredential operation

[jonas-jonas]

Related issue(s)

Checklist

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• I have referenced an issue containing the design document if my change
  introduces a new feature.
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Further Comments

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.24%. Comparing base (b5a66e0) to head (bdfd1c8).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3993   +/-   ##
=======================================
  Coverage   78.23%   78.24%           
=======================================
  Files         365      365           
  Lines       25586    25575   -11     
=======================================
- Hits        20018    20010    -8     
+ Misses       4039     4037    -2     
+ Partials     1529     1528    -1     

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[aeneasr]

This is a breaking change for the SDK due to the renaming - is it really needed, assuming that we'll allow removing all credentials type in the future?

[jonas-jonas]

I guess that's fair.

If we are going to allow the other credentials to be removed (which I am in favor of), I am fine with leaving as is.

If not, this would remove another point of friction here (and potential support requests).