revert: flatpak command line is_root

src/core_main.rs

@@ -803,10 +803,6 @@ fn is_root() -> bool {
         return crate::platform::is_elevated(None).unwrap_or_default()
             || crate::platform::is_root();
     }
-    #[cfg(linux)]
-    {
-        return crate::platform::is_flatpak() || crate::platform::is_root();
-    }
     #[allow(unreachable_code)]
     crate::platform::is_root()
 }

src/platform/linux.rs

@@ -701,7 +701,7 @@ pub fn get_env_var(k: &str) -> String {
     }
 }
 
-pub fn is_flatpak() -> bool {
+fn is_flatpak() -> bool {
     std::path::PathBuf::from("/.flatpak-info").exists()
 }