Support Git as only VCS (#4346)

Co-authored-by: Patrick Schratz <patrick.schratz@gmail.com>

cmd/server/openapi/docs.go

@@ -5115,9 +5115,6 @@ const docTemplate = `{
                 "require_approval": {
                     "$ref": "#/definitions/model.ApprovalMode"
                 },
-                "scm": {
-                    "$ref": "#/definitions/SCMKind"
-                },
                 "timeout": {
                     "type": "integer"
                 },
@@ -5184,21 +5181,6 @@ const docTemplate = `{
                 "VisibilityInternal"
             ]
         },
-        "SCMKind": {
-            "type": "string",
-            "enum": [
-                "git",
-                "hg",
-                "fossil",
-                "perforce"
-            ],
-            "x-enum-varnames": [
-                "RepoGit",
-                "RepoHg",
-                "RepoFossil",
-                "RepoPerforce"
-            ]
-        },
         "Secret": {
             "type": "object",
             "properties": {
@@ -5581,9 +5563,6 @@ const docTemplate = `{
                 "remote_id": {
                     "type": "string"
                 },
-                "scm": {
-                    "type": "string"
-                },
                 "trusted": {
                     "$ref": "#/definitions/metadata.TrustedConfiguration"
                 }