Remove tab-related text

tests/snapshots/output/changes_header.snapshot.txt

@@ -17,21 +17,7 @@ _ fn main() {
   fn area(rectangle: &Rectangle) -> u32 {
       rectangle.width * rectangle.height
   }
-  
++ 
 + fn perimeter(rectangle: &Rectangle) -> u32 {
 +     (rectangle.width + rectangle.height) * 2
 + }
-+ 
-  // Tab alignment:
-  /*
-          Indent
-          1       2       3       4
-  1       ?
-  22      ?
-  333     ?
-  4444    ?
-  55555   ?
-  666666  ?
-  7777777 ?
-  88888888        ?
-~ */