fetch: Remove a VLOG accidentally added in a prior CL

I accidentally included a VLOG statement from local debugging in a prior
change; this CL removes it.

R=jbroman

Bug: None
Change-Id: If942046836e306696547e163c18c6a0d84f5805b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2218229
Commit-Queue: David Van Cleve <davidvc@chromium.org>
Commit-Queue: Jeremy Roman <jbroman@chromium.org>
Auto-Submit: David Van Cleve <davidvc@chromium.org>
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#772232}

third_party/blink/renderer/core/fetch/request.cc

@@ -533,8 +533,6 @@ Request* Request::CreateRequestWithRequestOrString(
       return nullptr;
     }
 
-    VLOG(1) << "a";
-
     if (params.type == TrustTokenOperationType::kIssuance &&
         !IsTrustTokenIssuanceAvailableInExecutionContext(*execution_context)) {
       exception_state.ThrowTypeError(