Rollup merge of #71585 - tshepang:obsolete-comment, r=Dylan-DPC

remove obsolete comment

Not sure if it's better to have an outdated comment or no comment at all (made obsolete by 2b9fea1300).

src/librustc_mir/util/elaborate_drops.rs

@@ -835,13 +835,6 @@ where
         }
     }
 
-    /// Returns a basic block that drop a place using the context
-    /// and path in `c`. If `mode` is something, also clear `c`
-    /// according to it.
-    ///
-    /// if FLAG(self.path)
-    ///     if let Some(mode) = mode: FLAG(self.path)[mode] = false
-    ///     drop(self.place)
     fn complete_drop(
         &mut self,
         drop_mode: Option<DropFlagMode>,