Remove the libsnapshot fuzzer.

Follow u aosp/2480175

Test Breakage: http://shortn/_YhuHhWTtnw

(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:a3faea8551c03d55924f013b479e869dda8fb166)
Change-Id: I82b0bc9be70fab249b17d6a5b96af09ee14b1586
diff --git a/fs_mgr/TEST_MAPPING b/fs_mgr/TEST_MAPPING
index b6710d5..db27cf0 100644
--- a/fs_mgr/TEST_MAPPING
+++ b/fs_mgr/TEST_MAPPING
@@ -28,9 +28,6 @@
       "name": "vabc_legacy_tests"
     },
     {
-      "name": "libsnapshot_fuzzer_test"
-    },
-    {
       "name": "cow_api_test"
     }
   ],