Remove unused keyshareBlocked error

irmaclient/manual_session_test.go

@@ -94,7 +94,7 @@ func (sh *ManualSessionHandler) Failure(irmaAction irma.Action, err *irma.Sessio
 	}
 }
 func (sh *ManualSessionHandler) KeyshareBlocked(manager irma.SchemeManagerIdentifier, duration int) {
-	sh.Failure(irma.ActionUnknown, &irma.SessionError{ErrorType: irma.ErrorKeyshareBlocked})
+	sh.Failure(irma.ActionUnknown, &irma.SessionError{Err: errors.New("KeyshareBlocked")})
 }
 func (sh *ManualSessionHandler) KeyshareRegistrationIncomplete(manager irma.SchemeManagerIdentifier) {
 	sh.Failure(irma.ActionUnknown, &irma.SessionError{Err: errors.New("KeyshareRegistrationIncomplete")})

messages.go

@@ -106,8 +106,6 @@ const (
 	ErrorSerialization = ErrorType("serialization")
 	// Error in keyshare protocol
 	ErrorKeyshare = ErrorType("keyshare")
-	// Keyshare server has blocked us
-	ErrorKeyshareBlocked = ErrorType("keyshareBlocked")
 	// API server error
 	ErrorApi = ErrorType("api")
 	// Server returned unexpected or malformed response