For DMdA, follow Robby's fix for htpd-langs.ss.

Namely, don't set an uncaught-exception-handler.
(cherry picked from commit 2a418b9cf0)

collects/deinprogramm/deinprogramm-langs.rkt

@@ -191,11 +191,6 @@
 
 		 ;; hack: the test-engine code knows about the test~object name; we do, too
 		 (namespace-set-variable-value! 'test~object (build-test-engine))
-		 (uncaught-exception-handler
-		  (let ((previous (uncaught-exception-handler)))
-		    (lambda (exc)
-		      (display-results)
-		      (previous exc))))
 		 ;; record signature violations with the test engine
 		 (signature-violation-proc
 		  (lambda (obj signature message blame)