crypto: Allow some test methods to be dead code since macOS can't use them.

matrix_sdk_crypto/src/verification/sas/mod.rs

@@ -82,6 +82,7 @@ impl Sas {
     }
 
     #[cfg(test)]
+    #[allow(dead_code)]
     pub(crate) fn set_creation_time(&self, time: Instant) {
         self.inner.lock().unwrap().set_creation_time(time)
     }
@@ -363,6 +364,7 @@ impl InnerSas {
     }
 
     #[cfg(test)]
+    #[allow(dead_code)]
     fn set_creation_time(&mut self, time: Instant) {
         match self {
             InnerSas::Created(s) => s.set_creation_time(time),

matrix_sdk_crypto/src/verification/sas/sas_state.rs

@@ -260,6 +260,7 @@ impl<S: Clone> SasState<S> {
     }
 
     #[cfg(test)]
+    #[allow(dead_code)]
     pub fn set_creation_time(&mut self, time: Instant) {
         self.creation_time = Arc::new(time);
     }