Clean up more empty "Remarks" headings

[Rageking8]

This PR is a continuation of #5491. Some of these files are of lower priority, however there are only a few of them, hence I opted to not leave them out.

[prmerger-automator]

@Rageking8 : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.

[learn-build-service-prod]

Learn Build status updates of commit fb459ef:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/build/reference/help-compiler-command-line-help.md	✅Succeeded
docs/build/reference/nologo-suppress-startup-banner-c-cpp.md	✅Succeeded
docs/c-runtime-library/cxxframehandler.md	✅Succeeded
docs/c-runtime-library/internal-set-app-type.md	✅Succeeded
docs/c-runtime-library/reference/uncaught-exception.md	✅Succeeded
docs/c-runtime-library/setusermatherr.md	✅Succeeded
docs/cppcx/platform-arrayreference-class.md	✅Succeeded
docs/cppcx/platform-metadata-flagsattribute-attribute.md	✅Succeeded
docs/cppcx/platform-stringreference-class.md	✅Succeeded
docs/parallel/concrt/reference/event-class.md	✅Succeeded

For more details, please refer to the build report.

[v-dirichards]

@TylerMSFT

Can you review the proposed changes?

Important: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged"
@MicrosoftDocs/public-repo-pr-review-team