Subclass JetLightCodeInsightFixtureTestCase to avoid assert about invalid root
Drop lazy tests: test data is used in ResolveTestGenerated.Imports
Drop AbstractLazyResolveDescriptorRendererTest with DescriptorRendererTest refactoring
Drop LazyResolveStdlibLoadingTest

- Descriptors compare is useless
- Absence of errors in stdlib is checked in NoErrorsInStdlibTest
Remove tests - same is tested in AbstractLoadJavaTest
Drop AbstractLazyResolveRecursiveComparingTest test

Test data from compiler/testData/lazyResolve/ was moved to diagnostics tests