fix: remove pickup_to, pickup_from and get_pickup_time

relies on server-side validation instead js controller
diff --git a/erpnext/stock/doctype/shipment/shipment.js b/erpnext/stock/doctype/shipment/shipment.js
index 7af16af..ce2906e 100644
--- a/erpnext/stock/doctype/shipment/shipment.js
+++ b/erpnext/stock/doctype/shipment/shipment.js
@@ -363,43 +363,6 @@
 		if (frm.doc.pickup_date < frappe.datetime.get_today()) {
 			frappe.throw(__("Pickup Date cannot be before this day"));
 		}
-		if (frm.doc.pickup_date == frappe.datetime.get_today()) {
-			var pickup_time = frm.events.get_pickup_time(frm);
-			frm.set_value("pickup_from", pickup_time);
-			frm.trigger('set_pickup_to_time');
-		}
-	},
-	pickup_from: function(frm) {
-		var pickup_time = frm.events.get_pickup_time(frm);
-		if (frm.doc.pickup_from && frm.doc.pickup_date == frappe.datetime.get_today()) {
-			let current_hour = pickup_time.split(':')[0];
-			let current_min = pickup_time.split(':')[1];
-			let pickup_hour = frm.doc.pickup_from.split(':')[0];
-			let pickup_min = frm.doc.pickup_from.split(':')[1];
-			if (pickup_hour < current_hour || (pickup_hour == current_hour && pickup_min < current_min)) {
-				frm.set_value("pickup_from", pickup_time);
-				frappe.throw(__("Pickup Time cannot be in the past"));
-			}
-		}
-		frm.trigger('set_pickup_to_time');
-	},
-	get_pickup_time: function() {
-		let current_hour = new Date().getHours();
-		let current_min = new Date().toLocaleString('en-US', {minute: 'numeric'});
-		if (current_min < 30) {
-			current_min = '30';
-		} else {
-			current_min = '00';
-			current_hour = Number(current_hour)+1;
-		}
-		let pickup_time = current_hour +':'+ current_min;
-		return pickup_time;
-	},
-	set_pickup_to_time: function(frm) {
-		let pickup_to_hour = Number(frm.doc.pickup_from.split(':')[0])+5;
-		let pickup_to_min = frm.doc.pickup_from.split(':')[1];
-		let pickup_to = pickup_to_hour +':'+ pickup_to_min;
-		frm.set_value("pickup_to", pickup_to);
 	},
 	clear_pickup_fields: function(frm) {
 		let fields = ["pickup_address_name", "pickup_contact_name", "pickup_address", "pickup_contact", "pickup_contact_email", "pickup_contact_person"];