Revert "Apply to Event"

This reverts commit 5d362e2a39.

WebApp/ts/applyToEvent.ts

@@ -1,44 +0,0 @@
-document.addEventListener("DOMContentLoaded", () => {
-    const applyBtn = document.getElementById("applyBtn") as HTMLButtonElement | null;
-
-    if (!applyBtn) return;
-
-    const eventId = getEventIdFromURL();
-
-    if (!eventId) {
-        console.error("Event ID not found.");
-        return;
-    }
-
-    applyBtn.addEventListener("click", async () => {
-        try {
-            const response = await fetch(`/api/events/join/${eventId}`, {
-                method: "POST",
-                headers: {
-                    "Content-Type": "application/json"
-                },
-            });
-
-            const result: {
-                success: boolean;
-                error_msg?: string;
-            } = await response.json();
-
-            if (result.success) {
-                applyBtn.disabled = true;
-                applyBtn.textContent = "Applied Succesfully";
-            } else {
-                alert(`Error: ${result.error_msg ?? "Unknown error occurred."}`);
-            }
-        } catch (error) {
-            console.error("Failed to apply:", error);
-            alert("Failed to apply due to a network or server error.");
-        }
-    });
-
-    function getEventIdFromURL(): number | null {
-        const params = new URLSearchParams(window.location.search);
-        const idParam = params.get("event");
-        return idParam ? parseInt(idParam, 10) : null;
-    }
-});