Deleted/untracked unneeded files.

src/trash/CircularActionRecorder.java

src/trash/GameContext.java

src/trash/Generator.java

src/trash/MathDoku.java

src/trash/SampleAction.java

src/trash/TestMain.java

trivial/.vscode/launch.json

trivial/.vscode/settings.json

trivial/CageGenerator.java

trivial/Permutations$1.class

trivial/Permutations$Sign.class

trivial/Permutations.class

trivial/Permutations.java

trivial/permutations.py