refactor(developer): refactor linter 🙀

[srl295]

• simplify LdmlKeyboardCompiler.validate() by removing a redundant check

Fixes: #11054

@keymanapp-test-bot skip

Suggested by https://github.com/keymanapp/keyman/pull/11810#discussion_r1650176743

[keymanapp-test-bot[bot]]

User Test Results

Test specification and instructions

User tests are not required

[mcdurdin]

Fixes: #11054

I don't understand how this PR fixes that?

Could you update the title to clarify what is being done here?

[srl295]

Fixes: #11054

I don't understand how this PR fixes that?

Could you update the title to clarify what is being done here?

Updated.

I removed the "Fixes" - the feature work was in https://github.com/keymanapp/keyman/pull/11810 this is just an improvement to the fix.

[keyman-server]

Changes in this pull request will be available for download in Keyman version 18.0.92-alpha