remove unused dep

Author: Stephan Dilly

Cargo.lock

@@ -29,7 +29,6 @@ dirs = "2.0"
 crossbeam-channel = "0.4"
 scopeguard = "1.1"
 bitflags = "1.2"
-maplit = "1.0"
 backtrace = { version = "0.3" }
 scopetime = { path = "./scopetime", version = "0.1" }
 asyncgit = { path = "./asyncgit", version = "0.2" }