Use size_of from the prelude instead of imported

Use `std::mem::{size_of, size_of_val, align_of, align_of_val}` from the
prelude instead of importing or qualifying them.

These functions were added to all preludes in Rust 1.80.

crates/profile/src/memory_usage.rs

@@ -38,7 +38,7 @@ impl MemoryUsage {
                 // approximate that by using the Commit Charge value.
 
                 use windows_sys::Win32::System::{Threading::*, ProcessStatus::*};
-                use std::mem::{MaybeUninit, size_of};
+                use std::mem::MaybeUninit;
 
                 let proc = unsafe { GetCurrentProcess() };
                 let mut mem_counters = MaybeUninit::uninit();