cleanup tests

src/test/java/de/tla2b/examples/InstanceTest.java

src/test/java/de/tla2b/examples/MCTest.java

src/test/java/de/tla2b/examples/RegressionTests.java

src/test/java/de/tla2b/expression/ComplexExpressionTest.java

...est/java/de/tla2b/expression/ModuleAndExpressionTest.java

src/test/java/de/tla2b/expression/SimpleExpressionTest.java

src/test/java/de/tla2b/expression/TestError.java

src/test/java/de/tla2b/expression/TestSequences.java

src/test/java/de/tla2b/main/MainTest.java

src/test/java/de/tla2b/main/RenamerTest.java

src/test/java/de/tla2b/prettyprintb/ActionsTest.java

src/test/java/de/tla2b/prettyprintb/BBuiltInsTest.java

src/test/java/de/tla2b/prettyprintb/DefinitionsTest.java

src/test/java/de/tla2b/prettyprintb/ExceptTest.java

...test/java/de/tla2b/prettyprintb/ExtensibleRecordTest.java

...est/java/de/tla2b/prettyprintb/ExternelFunctionsTest.java

src/test/java/de/tla2b/prettyprintb/FunctionTest.java

src/test/java/de/tla2b/prettyprintb/LogicOperatorsTest.java

src/test/java/de/tla2b/prettyprintb/MacroTest.java

...va/de/tla2b/prettyprintb/MiscellaneousConstructsTest.java