diff --git a/core/js/src/main/scala/cats/effect/unsafe/FiberAwareExecutionContext.scala b/core/js/src/main/scala/cats/effect/unsafe/FiberAwareExecutionContext.scala
deleted file mode 100644
index 3718b8d4c7..0000000000
--- a/core/js/src/main/scala/cats/effect/unsafe/FiberAwareExecutionContext.scala
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright 2020-2023 Typelevel
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package cats.effect
-package unsafe
-
-import scala.collection.mutable
-import scala.concurrent.ExecutionContext
-
-private final class FiberAwareExecutionContext(ec: ExecutionContext) extends ExecutionContext {
-
-  def liveTraces(): Map[IOFiber[_], Trace] =
-    fiberBag.iterator.filterNot(_.isDone).map(f => f -> f.captureTrace()).toMap
-
-  private[this] val fiberBag = mutable.Set.empty[IOFiber[_]]
-
-  def execute(runnable: Runnable): Unit = runnable match {
-    case r: IOFiber[_] =>
-      fiberBag += r
-      ec execute { () =>
-        // We have to remove r _before_ running it, b/c it may be re-enqueued while running
-        // B/c JS is single-threaded, nobody can observe the bag while it is running anyway
-        fiberBag -= r
-        r.run()
-      }
-
-    case r => r.run()
-  }
-
-  def reportFailure(cause: Throwable): Unit = ec.reportFailure(cause)
-
-}