make a test less strict

Summary:
Like it says in the title. This doesn't really need to test the parsing, we
have another test for it.

Reviewed By: IanChilds

Differential Revision: D83578482

fbshipit-source-id: 15e54fe1ef37178a77c8a931ac682e5fd3000de4

Author: krallin

app/buck2_util/src/cgroup_info.rs

@@ -235,8 +235,7 @@ mod tests {
             let memory_stat_path = format!("{}/memory.stat", info.path);
 
             if Path::new(&memory_current_path).exists() && Path::new(&memory_stat_path).exists() {
-                let memory_info = info.read_memory_stat().unwrap();
-                assert!(memory_info.anon > 0, "anon should be greater than 0");
+                info.read_memory_stat().unwrap();
             }
         }
     }