Revert "attempt executor retry for helcione provider and 502 errors (#5473)" (#5541)

This reverts commit f305880.

Author: chitalian

worker/src/lib/ai-gateway/AttemptExecutor.ts

@@ -403,22 +403,7 @@ export class AttemptExecutor {
         : null;
 
       const providerStartTime = Date.now();
-
-      // Retry logic for PTB Helicone provider 502 errors
-      let response!: Response;
-      const maxRetries =
-        endpoint.provider === "helicone" && endpoint.ptbEnabled ? 2 : 0;
-
-      for (let attempt = 0; attempt <= maxRetries; attempt++) {
-        response = await forwarder(urlResult.data, escrowInfo);
-
-        // Only retry on 502 for Helicone PTB requests (no delay between retries)
-        if (response.status === 502 && attempt < maxRetries) {
-          continue;
-        }
-        break;
-      }
-
+      const response = await forwarder(urlResult.data, escrowInfo);
       const providerLatency = Date.now() - providerStartTime;
 
       metrics.markProviderEnd(response.status);