Refs #24136. Remove nightly jobs for 3.4.x.

Signed-off-by: Miguel Company <miguelcompany@eprosima.com>

Author: MiguelCompany

.github/workflows/nightly-ubuntu-ci.yml

@@ -20,20 +20,6 @@ jobs:
       run-tests: true
       use-ccache: false
 
-  nightly-ubuntu-ci-3_4_x:
-    uses: eProsima/Fast-DDS-docs/.github/workflows/reusable-ubuntu-ci.yml@3.4.x
-    with:
-      # It would be desirable to have a matrix of ubuntu OS for this job, but due to the issue opened in this ticket:
-      # https://github.com/orgs/community/discussions/128118 , it has been set as a single OS job.
-      os-version: 'ubuntu-24.04'
-      label: 'nightly-ubuntu-ci-3.4.x'
-      fastdds-docs-branch: '3.4.x'
-      fastdds-branch: '3.4.x'
-      fastdds-python-branch: '2.4.x'
-      run-build: true
-      run-tests: true
-      use-ccache: false
-
   nightly-ubuntu-ci-3_2_x:
     uses: eProsima/Fast-DDS-docs/.github/workflows/reusable-ubuntu-ci.yml@3.2.x
     with: