Remove derefs that would happen automatically

Clippy warns about those in Rust 1.65.0.

crates/fj/src/abi/context.rs

@@ -19,7 +19,7 @@ impl<'a> From<&'a &dyn crate::models::Context> for Context<'a> {
             let ctx = &*(user_data as *const &dyn crate::models::Context);
 
             match std::panic::catch_unwind(AssertUnwindSafe(|| {
-                ctx.get_argument(&*name)
+                ctx.get_argument(&name)
             })) {
                 Ok(Some(arg)) => StringSlice::from_str(arg),
                 Ok(None) => StringSlice::from_str(""),

crates/fj/src/abi/ffi_safe.rs

@@ -173,7 +173,7 @@ impl Deref for String {
     fn deref(&self) -> &Self::Target {
         // Safety: The only way to create a FfiSafeString is from a valid Rust
         // string, so we can skip the UTF-8 checks.
-        unsafe { std::str::from_utf8_unchecked(&*self.0) }
+        unsafe { std::str::from_utf8_unchecked(&self.0) }
     }
 }
 
@@ -296,7 +296,7 @@ impl Deref for StringSlice {
 
     fn deref(&self) -> &Self::Target {
         // Safety: the only way you can construct a StringSlice is via a string.
-        unsafe { std::str::from_utf8_unchecked(&*self.0) }
+        unsafe { std::str::from_utf8_unchecked(&self.0) }
     }
 }
 

crates/fj/src/abi/mod.rs

@@ -121,7 +121,7 @@ fn on_panic(payload: Box<dyn Any + Send>) -> ! {
         if let Some(s) = payload.downcast_ref::<std::string::String>() {
             s.as_str()
         } else if let Some(s) = payload.downcast_ref::<&str>() {
-            *s
+            s
         } else {
             "A panic occurred"
         };