Revert "SONAR-5620 Don't fail build when no provider is detected"

This reverts commit 7fd608ab6c9de5df88b77984dc431ce3066782ac.
Revert "SONAR-5645 Blacklist SCM Activity plugin"

This reverts commit 96db4430fdf5aa8020d6dc5a7793a6b9e7c975c5.
Revert "SONAR-5473 Fix fetching of remote SCM data"

This reverts commit da96eeccbe28e91619d60b34ae91ad442de6ce08.
Revert "SONAR-5644 Rework SCM API"

This reverts commit a4e76de07797ea2b9b809a0cc0b90286c90cd3cd.
Revert "SONAR-5642 Initial work on Git provider"

This reverts commit b375ce53532d11c75c9c920b36f0c4692d123c87.
Revert "SONAR-5644, SONAR-5473 Create new SCM extension point and fetch SCM data using WS"

This reverts commit 78fbdc2a8445e9131a10d2210b88d0e4d9927a14.