Use published version of arbitrary

fitzgen · fitzgen · commit 9a0ba45d6d2f · 2020-01-14T13:47:24.000-08:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -8,8 +8,7 @@ repository = "https://github.com/rust-fuzz/libfuzzer"
 version = "0.2.0"
 
 [dependencies]
-# arbitrary = "0.3"
-arbitrary = { git = "https://github.com/rust-fuzz/arbitrary.git", rev = "8fa099d" }
+arbitrary = "0.3.1"
 
 [build-dependencies]
 cc = "1.0"
