PROD-20639 Remove bind parameter from required for schema

Bind parameter can be missed in case of enabled: false.

Change-Id: Ib5565cec4ce544bf564d4e843399021b682247f2
diff --git a/memcached/schemas/server.yaml b/memcached/schemas/server.yaml
index a4b6ac2..bfccc42 100644
--- a/memcached/schemas/server.yaml
+++ b/memcached/schemas/server.yaml
@@ -6,7 +6,6 @@
 
 required:
   - enabled
-  - bind
 
 properties:
   enabled: