Remove uses of box_syntax in rustc and tools

Author: clubby789

tests/source/expr.rs

@@ -3,7 +3,6 @@
 // Test expressions
 
 fn foo() -> bool {
-    let boxed: Box<i32> = box   5;
     let referenced = &5 ;
 
     let very_long_variable_name = ( a +  first +   simple + test   );
@@ -132,12 +131,6 @@ fn qux() {
     }
 }
 
-fn issue227() {
-    {
-        let handler = box DocumentProgressHandler::new(addr, DocumentProgressTask::DOMContentLoaded);
-    }
-}
-
 fn issue184(source: &str) {
     for c in source.chars() {
         if index < 'a' {
@@ -413,10 +406,6 @@ fn issue2704() {
                                 .concat(&requires1)
                                 .concat(&requires2)
                                 .distinct_total());
-    let requires = requires.set(box requires0
-                                .concat(&requires1)
-                                .concat(&requires2)
-                                .distinct_total());
     let requires = requires.set(requires0
                                 .concat(&requires1)
                                 .concat(&requires2)

tests/target/configs/combine_control_expr/false.rs

@@ -108,12 +108,6 @@ fn main() {
         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,
     ));
 
-    // Box
-    foo(box Bar {
-        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
-        bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,
-    });
-
     // Unary
     foo(!bar(
         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,

tests/target/configs/combine_control_expr/true.rs

@@ -96,12 +96,6 @@ fn main() {
         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,
     ));
 
-    // Box
-    foo(box Bar {
-        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
-        bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,
-    });
-
     // Unary
     foo(!bar(
         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,

tests/target/expr.rs

@@ -3,7 +3,6 @@
 // Test expressions
 
 fn foo() -> bool {
-    let boxed: Box<i32> = box 5;
     let referenced = &5;
 
     let very_long_variable_name = (a + first + simple + test);
@@ -179,13 +178,6 @@ fn qux() {
     }
 }
 
-fn issue227() {
-    {
-        let handler =
-            box DocumentProgressHandler::new(addr, DocumentProgressTask::DOMContentLoaded);
-    }
-}
-
 fn issue184(source: &str) {
     for c in source.chars() {
         if index < 'a' {
@@ -454,12 +446,6 @@ fn issue2704() {
             .concat(&requires2)
             .distinct_total(),
     );
-    let requires = requires.set(
-        box requires0
-            .concat(&requires1)
-            .concat(&requires2)
-            .distinct_total(),
-    );
     let requires = requires.set(
         requires0
             .concat(&requires1)