Revert "Check Read permissions when getDocumentMetadata"

This reverts commit c94646177c.

Reason for revert: 155930637

Change-Id: Id452d316d1c1721fce715474df009ebe0fb719e8

core/java/android/provider/DocumentsProvider.java

@@ -1144,8 +1144,6 @@ public abstract class DocumentsProvider extends ContentProvider {
 
             out.putParcelable(DocumentsContract.EXTRA_RESULT, path);
         } else if (METHOD_GET_DOCUMENT_METADATA.equals(method)) {
-            enforceReadPermissionInner(documentUri, getCallingPackage(),
-                    getCallingAttributionTag(), null);
             return getDocumentMetadata(documentId);
         } else {
             throw new UnsupportedOperationException("Method not supported " + method);