[FAB-14718] Remove unnecessary function from interface

Change-Id: I2126c18b6f138eeaad8194866d436cb648dbc873
Signed-off-by: Alessandro Sorniotti <ale.linux@sopit.net>

Author: ale-linux

core/policy/application.go

@@ -40,8 +40,14 @@ type ApplicationPolicyEvaluator struct {
 	channelPolicyReferenceProvider ChannelPolicyReferenceProvider
 }
 
+// Manager defines functions to interface with the policy manager of a channel
+type Manager interface {
+	// GetPolicy returns a policy and true if it was the policy requested, or false if it is the default policy
+	GetPolicy(id string) (policies.Policy, bool)
+}
+
 type ChannelPolicyReferenceProviderImpl struct {
-	policies.Manager
+	Manager
 }
 
 func (c *ChannelPolicyReferenceProviderImpl) NewPolicy(channelConfigPolicyReference string) (policies.Policy, error) {
@@ -73,11 +79,6 @@ func (d *dynamicPolicyManager) GetPolicy(id string) (policies.Policy, bool) {
 	return mgr.GetPolicy(id)
 }
 
-func (d *dynamicPolicyManager) Manager(path []string) (policies.Manager, bool) {
-	// we don't use this function
-	panic("programming error")
-}
-
 // New returns an evaluator for application policies
 func New(deserializer msp.IdentityDeserializer, channel string, channelPolicyManagerGetter policies.ChannelPolicyManagerGetter) (*ApplicationPolicyEvaluator, error) {
 	_, ok := channelPolicyManagerGetter.Manager(channel)