[promises] Remove bad log statement (#33113)

Was leading to a nullptr deref, and we just don't need this one anymore.

<!--

If you know who should review your pull request, please assign it to
that
person, otherwise the pull request would get assigned randomly.

If your pull request is for a specific language, please add the
appropriate
lang label.

-->

src/core/lib/channel/promise_based_filter.cc

@@ -245,10 +245,6 @@ void BaseCallData::CapturedBatch::CancelWith(grpc_error_handle error,
   uintptr_t& refcnt = *RefCountField(batch);
   if (refcnt == 0) {
     // refcnt==0 ==> cancelled
-    if (grpc_trace_channel.enabled()) {
-      gpr_log(GPR_INFO, "%sCANCEL BATCH REQUEST ALREADY CANCELLED",
-              Activity::current()->DebugTag().c_str());
-    }
     return;
   }
   refcnt = 0;

test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-minimized-api_fuzzer-4628044215877632.test

@@ -0,0 +1,84 @@
+actions {
+  change_active_call {
+  }
+}
+actions {
+  create_server {
+  }
+}
+actions {
+  create_channel {
+    darget: "unix::p,grpc,,%,,65535,.\001,-,)\",\014-,l,b(;,x::p,grp,l\"%,,<,\001,-,http-[d483648,,,`0,pc,:"
+    channel_actions {
+      add_n_bytes_writable: 4
+      add_n_bytes_readable: 755771844994271744
+      wait_ms: 44
+    }
+    channel_actions {
+      add_n_bytes_writable: 18691697672192
+      wait_ms: 44
+    }
+    channel_actions {
+      add_n_bytes_writable: 44
+      add_n_bytes_readable: 44
+      wait_ms: 44
+    }
+  }
+}
+actions {
+  enable_tracer: "all\000\n"
+}
+actions {
+  watch_connectivity: 538968064
+}
+actions {
+  create_call {
+    propagation_mask: 1
+    method {
+      value: "["
+    }
+    host {
+      value: "["
+    }
+    timeout: 6386907
+  }
+}
+actions {
+  get_target {
+  }
+}
+actions {
+  queue_batch {
+    operations {
+      send_initial_metadata {
+      }
+    }
+    operations {
+    }
+    operations {
+    }
+  }
+}
+actions {
+  change_active_call {
+  }
+}
+actions {
+  enable_tracer: ""
+}
+actions {
+  queue_batch {
+  }
+}
+actions {
+  change_active_call {
+  }
+}
+actions {
+}
+actions {
+}
+actions {
+}
+actions {
+}