update power-go-client to v1.0.76 (#397)

Author: mkumatag

go.mod

@@ -4,7 +4,7 @@ go 1.16
 
 require (
 	github.com/IBM-Cloud/bluemix-go v0.0.0-20200921095234-26d1d0148c62
-	github.com/IBM-Cloud/power-go-client v1.0.75
+	github.com/IBM-Cloud/power-go-client v1.0.76
 	github.com/IBM/go-sdk-core/v5 v5.7.1
 	github.com/IBM/vpc-go-sdk v0.13.0
 	github.com/go-logr/logr v0.4.0
@@ -22,8 +22,4 @@ require (
 	sigs.k8s.io/controller-runtime v0.9.7
 )
 
-replace (
-	//TODO(mkumatag): remove this when github.com/IBM-Cloud/power-go-client adopts the recent version of github.com/go-openapi/errors package
-	github.com/go-openapi/errors => github.com/go-openapi/errors v0.19.3
-	sigs.k8s.io/cluster-api => sigs.k8s.io/cluster-api v0.4.4
-)
+replace sigs.k8s.io/cluster-api => sigs.k8s.io/cluster-api v0.4.4