Remove conda stages of CI build

Description

This MR removes the conda build stages from the CI suite that have been broken for some time. This is part of an ongoing effort to remove parallel container builds that aren't used for production or development.

Fixes: https://git.ligo.org/gstlal/projects/-/issues/276

added 1 commit

• 21065ce5 - fix for yum

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added 1 commit

• 239441f7 - fix texlive install stage with valid yum packages

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added 1 commit

• b479b85f - fix image for docs to be tethered to branch

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added 2 commits

• 259754af - docs job should depend on branch docker build
• 4b3c193d - add sphinx via yum install

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added 1 commit

• a1ec7c31 - try installing python3-sphinx instead

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added 2 commits

• c67c2549 - update shebang to use python3 executable
• a0ef027b - Merge remote-tracking branch 'origin/feature-remove-conda-tools' into feature-remove-conda-tools

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added 1 commit

• 240b1cc4 - add myst parser

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added 1 commit

• d108354b - yum installs stale version, use pip to install sphinx instead

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added 1 commit

• cd3385eb - add sphinx rtd theme

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requested review from @patrick.godwin

The offline test is still failing with lalapps_inspinj: command not found, but this is known and out of scope for this MR

good feedback, changes resolved

added 1 commit

• 7f1409a1 - pr feedback

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resolved all threads

approved this merge request

added 4 commits

• 7f1409a1...a11b59f9 - 3 commits from branch master
• 3f95b4b4 - Merge branch 'master' into feature-remove-conda-tools

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added 15 commits

• 3f95b4b4...ef20c56f - 2 commits from branch master
• 0c501655 - initial removal of conda from CI
• e726eea0 - remove unnecessary docker files related to conda
• 19414372 - fix for yum
• 80c81e06 - fix texlive install stage with valid yum packages
• d1f5631c - fix image for docs to be tethered to branch
• dc454e55 - docs job should depend on branch docker build
• ca0cf9de - add sphinx via yum install
• 15da6c14 - try installing python3-sphinx instead
• 73c68489 - update shebang to use python3 executable
• 0830f0c7 - add myst parser
• 9acb71be - yum installs stale version, use pip to install sphinx instead
• acd7bd3d - add sphinx rtd theme
• a486e13f - pr feedback

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added 2 commits

• 6a47cf91 - 1 commit from branch master
• 44242b36 - Merge branch 'master' into feature-remove-conda-tools

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added 2 commits

• 0d82e8af - 1 commit from branch master
• 84a7b4b3 - Merge branch 'master' into feature-remove-conda-tools

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merged