[resource_quota] Clear wait for ready bit in e2e test (#36967)

We don't have a guarantee of timeliness for connectivity issues to clear up with resource quota, and so this wait for ready setting is causing very long delays for the test to complete.

Closes #36967

COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36967 from ctiller:rq 4e76af9bda
PiperOrigin-RevId: 644502087

test/cpp/end2end/resource_quota_end2end_stress_test.cc

@@ -126,7 +126,7 @@ class End2EndResourceQuotaUnaryTest : public ::testing::Test {
     Status status;
     auto stub = EchoTestService::NewStub(
         CreateChannel(server_address_, grpc::InsecureChannelCredentials()));
-    ctx.set_wait_for_ready(true);
+    ctx.set_wait_for_ready(false);
     EchoClientUnaryReactor reactor(&ctx, stub.get(), payload_, &status);
     reactor.Await();
   }