Revert "Update a comment"

This reverts commit bd06073612fba027e1d1ea80566247a031df1fa8.
Revert "Enforce override of all the recovery GUCs"

This reverts commit 86473f9d0a7481b1a1344b19fe12d09ed202a38d.
Revert "Fix compilation bugs"

This reverts commit 42f5f4a913cdb3c07fc2ef7bddc9be65ee623a99.
Revert "Parse recovery.conf and transmit info to the new GUCs"

This reverts commit 37ed150b123e60a9ebbc6da028ccf4804cb11b64.
Revert "Change recovery.trigger to recovery.conf"

This reverts commit 327e7d54988804529384093c6c36d1c5cebc4e3d.
Revert "Finish the doc update"

This reverts commit d6744e56ac73a323079ea6ef8ceb5b3bcc7c3073.
Revert "Update some part of the docs"

This reverts commit be9cb5eb5aaf7dda4e60e3fd74c1d4c861eaa612.
Revert "Re-add recovery.conf"

This reverts commit 46842b5b7ca79a05f232fc14515dc7d638bcf24f.