Some cleanup

src/main/scala/leon/codegen/runtime/ChooseEntryPoint.scala

src/main/scala/leon/datagen/GrammarDataGen.scala

src/main/scala/leon/frontends/scalac/SaveImports.scala

src/main/scala/leon/purescala/ScalaPrinter.scala

src/main/scala/leon/purescala/Transformer.scala

src/main/scala/leon/purescala/Types.scala

src/main/scala/leon/repair/RepairCostModel.scala

src/main/scala/leon/repair/RepairPhase.scala

src/main/scala/leon/repair/rules/GuidedCloser.scala

src/main/scala/leon/solvers/SimpleAssumptionSolverAPI.scala

src/main/scala/leon/solvers/Solver.scala

src/main/scala/leon/synthesis/SynthesisSettings.scala

src/main/scala/leon/synthesis/Synthesizer.scala

src/main/scala/leon/utils/ASCIIHelpers.scala