fix `RemoveUnusedImportsStep` leftovers

[Pankraz76]

fix #1261

@iddeepak kindly request your eyes on this.

• execute and debug some test locally on IDE?
• maybe work this out?
  • tc exposed some issues

[ERROR] Failures: 
[ERROR]   RemoveUnusedImportsTest.removeUnused:485 value of:
    removeUnusedImports(...)
expected:
    interface Test { private static void foo() {} }
    
    
but was:
    import java.lang.Foo;
    interface Test { private static void foo() {} }
    
    
[ERROR]   RemoveUnusedImportsTest.removeUnused:485 value of:
    removeUnusedImports(...)
expected:
    …pkg.Constants.FOO;
    
    public class Test …
but was:
    …pkg.Constants.FOO;
    
    
    public class Test …
[ERROR]   RemoveUnusedImportsTest.removeUnused:485 value of:
    removeUnusedImports(...)
diff (-expected +actual):
    @@ -1,3 +1,4 @@
    +import static java.util.Collections.*;
     import static java.util.Collections.emptyList;
     
     class Test {
[ERROR]   RemoveUnusedImportsTest.removeUnused:485 value of:
    removeUnusedImports(...)
expected:
    class Test {
      java.…
but was:
    
    class Test {
      java.…
[ERROR]   RemoveUnusedImportsTest.removeUnused:485 value of:
    removeUnusedImports(...)
diff (-expected +actual):
    @@ -1,3 +1,4 @@
    +import static java.lang.Math.*;
     import static java.lang.Math.PI;
     
     class Test {
[ERROR]   RemoveUnusedImportsTest.removeUnused:485 value of:
    removeUnusedImports(...)
expected:
    // This is a comment mentioning ArrayList
    class Test {}
    
    
but was:
    
    // This is a comment mentioning ArrayList
    class Test {}
    
    
[ERROR]   RemoveUnusedImportsTest.removeUnused:485 value of:
    removeUnusedImports(...)
diff (-expected +actual):
    @@ -1,5 +1,6 @@
     package com.foo;
     import static com.foo.Outer.A;
    +import com.foo.*;
     import com.foo.B;
     import com.bar.C;
     class Test {
[INFO] 
[ERROR] Tests run: 1580, Failures: 7, Errors: 0, Skipped: 0

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[iddeepak]

@Pankraz76 I have pushed a few small tweaks—feel free to pull them into your branch and let me know what you think or if anything needs further adjustment PR #1266 Thank you!

[Pankraz76]

• https://github.com/palantir/palantir-java-format/pull/1337

[Pankraz76]

can not fix remaining tests, ether disable or fix.

Kindly request some feedback. Thanks.