Remove ability to add context parameters through the UI (#1660)

skyvern-frontend/src/routes/workflows/editor/panels/WorkflowParametersPanel.tsx

@@ -96,17 +96,6 @@ function WorkflowParametersPanel() {
             >
               Credential Parameter
             </DropdownMenuItem>
-            <DropdownMenuItem
-              onClick={() => {
-                setOperationPanelState({
-                  active: true,
-                  operation: "add",
-                  type: "context",
-                });
-              }}
-            >
-              Context Parameter
-            </DropdownMenuItem>
             <DropdownMenuItem
               onClick={() => {
                 setOperationPanelState({