Remove dead link in README.md

Author: Hejsil

Diff for: README.md

@@ -2,7 +2,6 @@
 
 A parser combinator library for the [`Zig`](https://ziglang.org/)
 programming language. Time to make your own parser mech!
-![mech](https://thumbs.gfycat.com/GrippingElatedAzurevasesponge-size_restricted.gif)
 
 ```zig
 const mecha = @import("mecha");