Undo FutureAdapter's catching of Throwable in 4.1.x

Issue: SPR-13413
Issue: SPR-12887

Author: jhoeller

spring-core/src/main/java/org/springframework/util/concurrent/FutureAdapter.java

@@ -107,12 +107,6 @@ final T adaptInternal(S adapteeResult) throws ExecutionException {
 						this.state = State.FAILURE;
 						throw ex;
 					}
-					catch (Throwable ex) {
-						ExecutionException execEx = new ExecutionException(ex);
-						this.result = execEx;
-						this.state = State.FAILURE;
-						throw execEx;
-					}
 				default:
 					throw new IllegalStateException();
 			}