Removed feedback link from reading preferences

[nbradbury]

Fixes #21465

This PR removes the feedback link from the Reading Preferences screen. To test, simply go to Reading Preferences and verify this link no longer appears:

[dangermattic]

	1 Warning
:warning:	PR is not assigned to a milestone.

Generated by :no_entry_sign: Danger

[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress by scanning the QR code below to install the corresponding build.

	App Name	WordPress
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr21466-e5f5734
	Commit	e5f5734be81ff20feafb271592079a1b197dbdaf
	Direct Download	wordpress-prototype-build-pr21466-e5f5734.apk

Note: Google Login is not supported on these builds.

[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack by scanning the QR code below to install the corresponding build.

	App Name	Jetpack
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr21466-e5f5734
	Commit	e5f5734be81ff20feafb271592079a1b197dbdaf
	Direct Download	jetpack-prototype-build-pr21466-e5f5734.apk

Note: Google Login is not supported on these builds.

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 39.49%. Comparing base (24699b0) to head (e5f5734). Report is 32 commits behind head on trunk.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## trunk #21466 +/- ## ========================================== - Coverage 39.49% 39.49% -0.01% ========================================== Files 2120 2119 -1 Lines 99466 99461 -5 Branches 15286 15285 -1 ========================================== - Hits 39286 39282 -4 + Misses 56698 56697 -1 Partials 3482 3482 ```

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