ci: Removing travis-ci

[gsnw-sebast]

Removing travis-ci because it is no longer actively used and travis-ci does not offer a free option for opensource projects

[gemini-code-assist]

Summary of Changes

Hello @gsnw-sebast, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request streamlines the project's continuous integration setup by completely removing the Travis CI configuration. This change is driven by the fact that Travis CI is no longer actively utilized for the project and its free tier for open-source initiatives has been discontinued. The project's changelog has also been updated to reflect this significant infrastructure modification.

Highlights

• Travis CI Removal: The entire .travis.yml configuration file has been removed from the repository, signifying the complete discontinuation of Travis CI for this project.
• Reason for Removal: Travis CI is no longer actively used for this project and its free tier for open-source projects has been discontinued, making its continued presence unnecessary.
• Changelog Update: The CHANGELOG.md file has been updated to include an entry documenting the removal of Travis CI under the 'Bugfixes and other changes' section for the upcoming 'Next' release.

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[gemini-code-assist]

Code Review

This pull request correctly removes the .travis.yml configuration file, as Travis CI is no longer used by the project. The update to CHANGELOG.md is also appropriate.

However, the removal of Travis CI integration appears to be incomplete. I've noticed a few files and code snippets related to Travis CI that are now obsolete and should probably be removed to complete the cleanup:

• ci/deploy-coveralls.sh: This script uses Travis CI environment variables like TRAVIS_DIST and TRAVIS_OS_NAME. It was triggered by .travis.yml and seems to be unused now.
• ci/deploy-coverity.sh: This script uses the TRAVIS_BUILD_ID environment variable and was also likely only used in the Travis CI pipeline.
• In ci/build-4-compile.sh, there is a comment ## setcap currently doesn't work anymore on travis-ci which is now outdated.

I recommend expanding this PR to remove these leftover files and references. This will help improve the maintainability of the CI scripts.

[coveralls]

coverage: 87.95%. remained the same
when pulling 1ae0c36 on gsnw:remove-travis-ci
into 06f9481 on schweikert:develop.

[gsnw-sebast]

I'm not sure, but do we need ci/deploy-coverity.sh or did that only running with travis-ci?

[schweikert]

I'm not sure, but do we need ci/deploy-coverity.sh or did that only running with travis-ci?

I would keep that script. It probably can be ported to run using Github Actions.

[schweikert]

I fixed the coverity stuff (it now runs with GitHub Actions)