remove the play_test with gui from travis script, it doesn't work

.travis.yml

@@ -47,18 +47,15 @@ script:
     - time if [ "$CPP_TESTS" = true ]; then ./test; export TEST_ERROR_CODE=$?; ./utils/travis/exit_wrapper.sh $TEST_ERROR_CODE; fi
     - if [ "$WML_TESTS" = true ]; then time ./run_wml_tests -g -v -t "$WML_TEST_TIME"; fi
     - time if [ "$PLAY_TEST" = true ]; then ./wesnoth -m --controller 1:ai --controller 2:ai --nogui; export PLAY_TEST_ERROR_CODE=$?; ./utils/travis/exit_wrapper.sh $PLAY_TEST_ERROR_CODE; fi
-    - time if [ "$PLAY_TEST" = true ]; then ./wesnoth -m --controller 1:ai --controller 2:ai; export PLAY_TEST_GUI_ERROR_CODE=$?; ./utils/travis/exit_wrapper.sh $PLAY_TEST_GUI_ERROR_CODE; fi
 
 after_failure:
-    - if [[ "$TEST_ERROR_CODE" -ge 128 -o "$PLAY_TEST_ERROR_CODE" -ge 128 -o "$PLAY_TEST_GUI_ERROR_CODE" -ge 128 ]] && [[ "$WML_TESTS" = false ]]; then time sudo apt-get install -qq gdb; fi
+    - if [[ "$TEST_ERROR_CODE" -ge 128 -o "$PLAY_TEST_ERROR_CODE" -ge 128 ]] && [[ "$WML_TESTS" = false ]]; then time sudo apt-get install -qq gdb; fi
 # Need to install that if we don't already have it
     - if [ -f "errors.log" ]; then echo -e "\n*** \n*\n* Errors reported in wml unit tests, here is errors.log...\n*\n*** \n"; cat errors.log; fi
     - if [ "$TEST_ERROR_CODE" -ge 128 ]; then echo -e "\n***\n*\n* Encountered a segfault in the c++ unit test executable, attempting to get a backtrace in the remaining time...\n*\n***\n"; fi
     - if [ "$TEST_ERROR_CODE" -ge 128 ]; then time gdb -q -batch -ex start -ex continue -ex bt -ex quit --args ./test; fi
     - if [ "$PLAY_TEST_ERROR_CODE" -ge 128 ]; then echo -e "\n***\n*\n* Encountered a segfault when running an ai test, attempting to get a backtrace in the remaining time...\n*\n***\n"; fi
     - if [ "$PLAY_TEST_ERROR_CODE" -ge 128 ]; then time gdb -q -batch -ex start -ex continue -ex bt -ex quit --args ./wesnoth -m --controller 1:ai --controller 2:ai --nogui; fi
-    - if [ "$PLAY_TEST_GUI_ERROR_CODE" -ge 128 ]; then echo -e "\n***\n*\n* Encountered a segfault when running an ai test, attempting to get a backtrace in the remaining time...\n*\n***\n"; fi
-    - if [ "$PLAY_TEST_GUI_ERROR_CODE" -ge 128 ]; then time gdb -q -batch -ex start -ex continue -ex bt -ex quit --args ./wesnoth -m --controller 1:ai --controller 2:ai; fi
 
 notifications:
     email: false