Cargo: Remove the php keyword.

Author: Hywan

Cargo.toml

@@ -5,7 +5,7 @@ authors     = ["Ivan Enderlin <ivan.enderlin@tagua.io>"]
 repository  = "https://github.com/tagua-vm/llvm"
 description = "Safe LLVM bindings."
 readme      = "README.md"
-keywords    = ["php", "virtual", "machine", "llvm", "compiler", "backend"]
+keywords    = ["virtual", "machine", "llvm", "compiler", "backend"]
 license     = "BSD-3-Clause"
 
 [lib]