Jenkins: delete Jenkinsfile-compile/Jenkinsfile-hardware

[dagar]

• Jenkinsfile-compile is now redundant with github actions
• Jenkinsfile-hardware will be migrated to github actions once new test rack hardware is available (old test rack server died)

[github-actions[bot]]

FLASH Analysis

px4_fmu-v5x

``` FILE SIZE VM SIZE -------------- -------------- +0.0% +8 +0.0% +8 .text -0.0% -8 [ = ] 0 [Unmapped] [ = ] 0 +0.0% +8 TOTAL ```

px4_fmu-v6x

``` FILE SIZE VM SIZE -------------- -------------- +0.0% +8 +0.0% +8 .text -0.0% -8 [ = ] 0 [Unmapped] [ = ] 0 +0.0% +8 TOTAL ```