Remove glog from Gopkg.toml

Since we don't directly depend on glog any more, we can remove it
from Gopkg.toml.

Author: DirectXMan12

Gopkg.lock

@@ -54,17 +54,17 @@ required = ["sigs.k8s.io/testing_frameworks/integration",
   name = "go.uber.org/zap"
   version = "1.8.0"
 
-[[constraint]]
-  name = "sigs.k8s.io/testing_frameworks"
-  revision = "f53464b8b84b4507805a0b033a8377b225163fea"
-
-[[constraint]]
-  name = "github.com/go-logr/logr"
-  revision = "9fb12b3b21c5415d16ac18dc5cd42c1cfdd40c4e"
+# these are not listed explicitly until we get version tags,
+# since dep doesn't like bare revision dependencies
 
-[[constraint]]
-  name = "github.com/golang/glog"
-  revision = "23def4e6c14b4da8ac2ed8007337bc5eb5007998"
+# [[constraint]]
+#   name = "sigs.k8s.io/testing_frameworks"
+#
+# [[constraint]]
+#   name = "github.com/go-logr/logr"
+#
+# [[constraint]]
+#   name = "github.com/go-logr/zapr"
 
 # For dependency below: Refer to issue https://github.com/golang/dep/issues/1799
 [[override]]