svoid test_tok_cleanImports() {
  S in = [[
    import a.bla;
    import a.b.blu;
    import a.a.blo;
    import x.c.*;
    
    blu = bla();
  ]];
  
  S out = [[
    import a.bla;
    import a.b.blu;
    import x.c.*;
    
    blu = bla();
  ]];
  
  assertJavaSourceEqualsVerbose(out, tok_cleanImports(javaTok(in)));
}

Began life as a copy of #1031283