[RF] Fix memory leaks in testRooCrystalBall

[guitargeek]

The memory leaks were introduced on purpose in that test, but they are probably not necessary anymore.

Also, suppress unneeded logging and format code.

[guitargeek]

The Windows failures are unrelated.

[github-actions]

Test Results

    13 files      13 suites   2d 23h 20m 46s ⏱️
 2 652 tests  2 650 ✅ 0 💤 2 ❌
32 658 runs  32 656 ✅ 0 💤 2 ❌

For more details on these failures, see this check.

Results for commit 0d5ee5b.

[pcanal]

Why were the leak introduced on purpose? Why are they no longer neeeded?

[guitargeek]

I wrote that test the first week that I worked in the ROOT team, and I had not much of a clue about RooFit or ROOT 😆 I don't remember anything in detail. In hindsight, it's probably because these RooFit objects reference each other and something used to depend on the order of destruction.

I randomly saw this again today and figured it's probably not needed anymore.