chore(core): Remove unused enum

Author: 0ski

packages/core/src/v3/schemas/api.ts

@@ -522,7 +522,6 @@ export const DeploymentTriggeredVia = z
     "cli:travis_ci",
     "cli:buildkite",
     "git_integration:github",
-    "integration:vercel",
     "dashboard",
   ])
   .or(anyString);