gollvm: unit test cleanup

Remove some debug trace code accidentally left in as part of
https://go-review.googlesource.com/c/gollvm/+/113723.

Change-Id: If9965564c0d3a538adeabf2dbb4ee54075732111
Reviewed-on: https://go-review.googlesource.com/114959
Reviewed-by: Than McIntosh <thanm@google.com>

unittests/BackendCore/BackendDebugEmit.cpp

diff --git a/unittests/BackendCore/BackendDebugEmit.cpp b/unittests/BackendCore/BackendDebugEmit.cpp
index a3e937e..6739f66 100644
--- a/unittests/BackendCore/BackendDebugEmit.cpp
+++ b/unittests/BackendCore/BackendDebugEmit.cpp
@@ -261,8 +261,6 @@
   bool broken = h.finish(PreserveDebugInfo);
   EXPECT_FALSE(broken && "Module failed to verify.");
 
-  be->dumpModule();
-
   // Three of the constructs above had different files applied to them
   // (equivalent of Go //line directive); make sure that the files
   // appear in the meta-data.