chore(table): drop a section separator comment

Separators like these are non-TSDoc decoration that CLAUDE.md already rules
out. This is the only one in a file this branch touches; the rest of the repo
is swept separately.

Author: waleedlatif1

apps/sim/lib/table/workflow-columns.ts

@@ -1072,8 +1072,6 @@ export async function runWorkflowColumn(opts: {
   return { dispatchId, shouldSignalRowsChanged: true }
 }
 
-// ───────────────────────────── Validation ─────────────────────────────
-
 /**
  * Validates schema-level invariants. Run on every `addTableColumn`,
  * `addWorkflowGroup`, `updateWorkflowGroup`, `renameColumn`, `reorderColumns`,