remove non-used variables

Author: TGlide

src/lib/components/chat/ChatMessage.svelte

@@ -45,7 +45,6 @@
 const publicConfig = usePublicConfig();
 
 let contentEl: HTMLElement | undefined = $state();
-let isCopied = $state(false);
 let messageWidth: number = $state(0);
 let messageInfoWidth: number = $state(0);
 
@@ -90,14 +89,6 @@
 );
 let hasClientThink = $derived(!hasServerReasoning && thinkSegments.length > 1);
 
-$effect(() => {
-if (isCopied) {
-setTimeout(() => {
-isCopied = false;
-}, 1000);
-}
-});
-
 let editMode = $derived(editMsdgId === message.id);
 let editedContent = $derived(message.content);
 </script>
@@ -210,9 +201,6 @@
 {/if}
 {#if !isLast || !loading}
 <CopyToClipBoardBtn
-onClick={() => {
-isCopied = true;
-}}
 classNames="btn rounded-sm p-1 text-sm text-gray-400 hover:text-gray-500 focus:ring-0 dark:text-gray-400 dark:hover:text-gray-300"
 value={message.content}
 iconClassNames="text-xs"