Improve C# statement deletion clean up

[JohnEfford]

Clean up not removing empty lines:

Clean up removes trailing spaces for deleted statement but not trailing new lines, so for the code:

public void DeletionStatement()
{
    var a = 10; //This statement has trailing comment
    Console.WriteLine("Badger");
    if (1 == 1) //kdkdkdk 
    {
      Console.WriteLine("In If");
    }
    var b = 20; var c = 30;
}

Current correct space trailing space deletion:

Deleting statement var a = 10; using "chuck state red" removes the space between the statement and its trailing comment, and deleting var b = 20; using "chuck state vest" gives

public void DeletionStatement()
{
    //This statement has trailing comment
    Console.WriteLine("Badger");
    if (1 == 1) //kdkdkdk 
    {
      Console.WriteLine("Badger");
    }
    var c = 30;
}

Incorrect line deletion current behaviour:

But deleting statement Console.WriteLine("Badger"); using "chuck state ..." leaves an empty line:

public void DeletionStatement()
{
    var a = 10; //This statement has trailing comment

    if (1 == 1) //kdkdkdk 
    {
      Console.WriteLine("In If");
    }
    var b = 20; var c = 30;
}

Likewise deleting the if statement leaves:

public void DeletionStatement()
{
    var a = 10; //This statement has trailing comment
    Console.WriteLine("Badger");

    var b = 20; var c = 30;
}

Desired Behaviour

Where the commands should leave:

public void DeletionStatement()
{
    var a = 10; //This statement has trailing comment
    if (1 == 1) //kdkdkdk 
    {
      Console.WriteLine("In If");
    }
    var b = 20; var c = 30;
}

and

public void DeletionStatement()
{
    var a = 10; //This statement has trailing comment
    Console.WriteLine("Badger");
    var b = 20; var c = 30;
}

respectively.

[pokey]

Fwiw we will probably handle this one in a generic fashion via #855

[JohnEfford]

That looks like it closes this issue then.