Remove some unnecessary parens in `assert!` conditions

While working on #122661, some of these started triggering our "unnecessary parens" lints due to a change in the `assert!` desugaring. A cursory search identified a few more. Some of these have been carried from before 1.0, were a bulk rename from the previous name of `assert!` left them in that state. I went and removed as many of these unnecessary parens as possible in order to have fewer annoyances in the future if we make the lint smarter.

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/ui/structs-enums/class-impl-very-parameterized-trait.rs b/tests/ui/structs-enums/class-impl-very-parameterized-trait.rs
index 0b37192fc3b..6caec1e2034 100644
--- a/tests/ui/structs-enums/class-impl-very-parameterized-trait.rs
+++ b/tests/ui/structs-enums/class-impl-very-parameterized-trait.rs
@@ -102,6 +102,6 @@ pub fn main() {
     let mut spotty: cat<cat_type> = cat::new(2, 57, cat_type::tuxedo);
     for _ in 0_usize..6 { spotty.speak(); }
     assert_eq!(spotty.len(), 8);
-    assert!((spotty.contains_key(&2)));
+    assert!(spotty.contains_key(&2));
     assert_eq!(spotty.get(&3), &cat_type::tuxedo);
 }