Code cleanup

...odel/base/dsl/scoping/BaseLanguageLocalScopeProvider.java

...ges/model/base/dsl/scoping/BaseLanguageScopeProvider.java

...s/model/ddl/dsl/DataDescriptionLanguageRuntimeModule.java

.../DataDescriptionLanguageClasspathGlobalScopeProvider.java

...sl/scoping/DataDescriptionLanguageLocalScopeProvider.java

...s/model/generator/dsl/tests/GeneratorDSLParsingTest.xtend

...model/generator/dsl/tests/regressions/AttributeLinking.dl

...del/generator/dsl/tests/regressions/attribute-linking.ddl

...nerator/dsl/tests/regressions/attribute-linking.generator

...uages/model/instance/dsl/tests/AttributeLinkingTest.xtend

...guages/model/generator/dsl/GeneratorDSLRuntimeModule.java

...or/dsl/scoping/GeneratorClasspathGlobalScopeProvider.java

...generator/dsl/scoping/GeneratorDSLLocalScopeProvider.java

...odel/generator/dsl/scoping/GeneratorDSLScopeProvider.java

...ges/model/instance/dsl/InstanceLanguageRuntimeModule.java

...tance/dsl/scoping/InstanceLanguageLocalScopeProvider.java

...l/instance/dsl/scoping/InstanceLanguageScopeProvider.java

...s/model/mll/dsl/MachineLearningLanguageRuntimeModule.java

.../scoping/MachineLearningClasspathGlobalScopeProvider.java

...mll/dsl/scoping/MachineLearningLanguageScopeProvider.java