odrefresh: temporarily disable OdrFsUtilsTest.GetUsedSpace

Test is failing on the LUCI bots.

Bug: 186730164
Test: atest --host art_odrefresh_tests
Change-Id: Ia19533ca9256053bbcac577d4c16db2048730175
diff --git a/odrefresh/odr_fs_utils_test.cc b/odrefresh/odr_fs_utils_test.cc
index 9b2535a..6c43265 100644
--- a/odrefresh/odr_fs_utils_test.cc
+++ b/odrefresh/odr_fs_utils_test.cc
@@ -118,7 +118,7 @@
   }
 }
 
-TEST_F(OdrFsUtilsTest, GetUsedSpace) {
+TEST_F(OdrFsUtilsTest, DISABLED_GetUsedSpace) {
   static constexpr size_t kFirstFileBytes = 1;
   static constexpr size_t kSecondFileBytes = 16111;
   static constexpr size_t kBytesPerBlock = 512;