Drop

(module
  (import "console" "log" (func $log (param i32)))
  (func $main
    ;; load two values onto the stack
    i32.const 10
    i32.const 20
    ;; drop the top item from the stack (`20`)
    drop
    call $log ;; log the top value on the stack (`10`)
  )
  (start $main)
)

const url = "{%wasm-url%}";
await WebAssembly.instantiateStreaming(fetch(url), { console });

;; push multiple values onto the stack
i32.const 1
i32.const 2
i32.const 3
;; drop the top item from the stack (`3`)
drop
;; the top item on the stack will now be `2`