daemon.getEndpointInNetwork() is only used on Windows

```
13:06:14 daemon/network.go:964:6: U1000: func `getEndpointInNetwork` is unused (unused)
13:06:14 func getEndpointInNetwork(name string, n libnetwork.Network) (libnetwork.Endpoint, error) {
```

Signed-off-by: Sebastiaan van Stijn <[email protected]>

Author: thaJeztah

daemon/network.go

@@ -960,12 +960,6 @@ func buildCreateEndpointOptions(c *container.Container, n libnetwork.Network, ep
 	return createOptions, nil
 }
 
-// getEndpointInNetwork returns the container's endpoint to the provided network.
-func getEndpointInNetwork(name string, n libnetwork.Network) (libnetwork.Endpoint, error) {
-	endpointName := strings.TrimPrefix(name, "/")
-	return n.EndpointByName(endpointName)
-}
-
 // getSandboxPortMapInfo retrieves the current port-mapping programmed for the given sandbox
 func getSandboxPortMapInfo(sb libnetwork.Sandbox) nat.PortMap {
 	pm := nat.PortMap{}

daemon/network_windows.go

@@ -0,0 +1,13 @@
+package daemon
+
+import (
+	"strings"
+
+	"github.com/docker/libnetwork"
+)
+
+// getEndpointInNetwork returns the container's endpoint to the provided network.
+func getEndpointInNetwork(name string, n libnetwork.Network) (libnetwork.Endpoint, error) {
+	endpointName := strings.TrimPrefix(name, "/")
+	return n.EndpointByName(endpointName)
+}