Fix Test Abort Process Check

[rayman2000]

The test for aborting verification in 1_ide.test.ts should have a check that the Boogie and Z3 processes have ended after aborting. Sometimes however theses processes do not go away fast enough, causing the test to fail. This occurs especially on Mac and Windows.

As a temporary measure, we have commented out the check of the processes. We should figure out why this is happening and fix it.

[rayman2000]

Adding delay before the check seems to solve the problems on Ubuntu and Mac, but the error still occurs on Windows

[rayman2000]

I have seen other tests which also check for processes fail in the wild, especially for Mac. Rerunning usually passes, so the problem seems less severe than for this test.