removed application-endpoint-discovery.feature

[Kevsy]

What type of PR is this?

Add one of the following kinds:

• cleanup

What this PR does / why we need it:

removes application-endpoint-discovery.feature as that is now in the dedicated repository for that API

Which issue(s) this PR fixes:

Fixes #398

Special notes for reviewers:

Changelog input

 release-note

Additional documentation

This section can be blank.

docs

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	2		0	0.02s
✅ JSON	eslint-plugin-jsonc	1	0	0	1.2s
✅ JSON	jsonlint	1		0	0.18s
✅ JSON	prettier	1	1	0	0.54s
✅ JSON	v8r	1		0	1.65s
✅ OPENAPI	spectral	1		0	3.22s
✅ REPOSITORY	git_diff	yes		no	0.37s
✅ REPOSITORY	secretlint	yes		no	2.53s
✅ YAML	yamllint	1		0	0.75s

See detailed report in MegaLinter reports

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