Drop the unboxed closure debuginfo workaround

tomassedovic · tomassedovic · commit a5991d0b0721 · 2014-10-09T11:13:31.000+02:00
Fixed in rust-lang/rust#17803.
diff --git a/Cargo.toml b/Cargo.toml
@@ -8,7 +8,3 @@ build = "./build.sh"
 
 name = "tcod"
 path = "src/lib.rs"
-
-[profile.test]
-# Workaround for https://github.com/rust-lang/rust/issues/17021
-debug = false
