revert pdb trace on error tests

setup.cfg

@@ -11,8 +11,8 b' verbosity=2'
 with-pylons=test.ini
 detailed-errors=1
 nologcapture=1
-pdb=1
-pdb-failures=1
+#pdb=1
+#pdb-failures=1
 
 # Babel configuration
 [compile_catalog]