code generated does not compile if multiple Intellij annotations in classpath

[JerryShea]

e.g. if you com.intellij:annotations and org.jetbrains:annotations in the classpath

For some reason the types that end up in the imports collection get an annotation of org.jetbrains.NotNull added to them and then CtTypeInformation.getQualifiedName() outputs the type name with the annotation embedded within it, breaking the compile.