rt: cleanup runtime::context (#2063)

Tweak context to remove more fns and usage of `Option`. Remove
`ThreadContext` struct as it is reduced to just `Handle`. Avoid passing
around individual driver handles and instead limit to the
`runtime::Handle` struct.

1 files changed, 0 insertions, 1 deletions

diff --git a/tokio/src/macros/cfg.rs b/tokio/src/macros/cfg.rs
index cc93cc8a..1f168255 100644
--- a/tokio/src/macros/cfg.rs
+++ b/tokio/src/macros/cfg.rs
@@ -4,7 +4,6 @@ macro_rules! cfg_resource_drivers {
     ($($item:item)*) => {
         $(
             #[cfg(any(feature = "io-driver", feature = "time"))]
-            #[cfg(not(loom))]
             $item
         )*
     }