fix: remove bad default for anniversary reminders (#27632)

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diff --git a/erpnext/hr/doctype/employee/employee_reminders.py b/erpnext/hr/doctype/employee/employee_reminders.py
index ba086dc..216d8f6 100644
--- a/erpnext/hr/doctype/employee/employee_reminders.py
+++ b/erpnext/hr/doctype/employee/employee_reminders.py
@@ -184,7 +184,7 @@
 # --------------------------
 def send_work_anniversary_reminders():
 	"""Send Employee Work Anniversary Reminders if 'Send Work Anniversary Reminders' is checked"""
-	to_send = int(frappe.db.get_single_value("HR Settings", "send_work_anniversary_reminders") or 1)
+	to_send = int(frappe.db.get_single_value("HR Settings", "send_work_anniversary_reminders"))
 	if not to_send:
 		return