misc: test: rm empty lines

Author: ada4a

tests/ui/double_parens.rs

@@ -14,32 +14,26 @@ impl DummyStruct {
 fn simple_double_parens() -> i32 {
     ((0))
     //~^ double_parens
-
-
 }
 
 fn fn_double_parens() {
     dummy_fn((0));
     //~^ double_parens
-
 }
 
 fn method_double_parens(x: DummyStruct) {
     x.dummy_method((0));
     //~^ double_parens
-
 }
 
 fn tuple_double_parens() -> (i32, i32) {
     ((1, 2))
     //~^ double_parens
-
 }
 
 fn unit_double_parens() {
     (())
     //~^ double_parens
-
 }
 
 fn fn_tuple_ok() {
@@ -63,7 +57,6 @@ fn inside_macro() {
     assert_eq!((1, 2), (1, 2), "Error");
     assert_eq!(((1, 2)), (1, 2), "Error");
     //~^ double_parens
-
 }
 
 fn main() {}