Remove the symlink to the built library

It was not used anywhere

Author: Guillaume Fraux

Cargo.toml

@@ -2,7 +2,6 @@
 name = "lumol-py"
 version = "0.1.0"
 authors = ["Guillaume Fraux <[email protected]>"]
-build = "build.rs"
 
 [lib]
 crate-type = ["cdylib"]