Remove AWS legacy cloud provider + EBS in-tree storage plugin

Signed-off-by: torredil <torredil@amazon.com>

vendor/github.com/stretchr/objx/tests.go

@@ -1,17 +0,0 @@
-package objx
-
-// Has gets whether there is something at the specified selector
-// or not.
-//
-// If m is nil, Has will always return false.
-func (m Map) Has(selector string) bool {
-	if m == nil {
-		return false
-	}
-	return !m.Get(selector).IsNil()
-}
-
-// IsNil gets whether the data is nil or not.
-func (v *Value) IsNil() bool {
-	return v == nil || v.data == nil
-}