build: Remove url crate dependency

This removes multiple transitive dependencies and speeds up our build.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

vmm/Cargo.toml

@@ -41,7 +41,6 @@ serde_derive = ">=1.0.27"
 serde_json = ">=1.0.9"
 signal-hook = "0.3.7"
 thiserror = "1.0"
-url = "2.2.1"
 vfio-ioctls = { git = "https://github.com/rust-vmm/vfio-ioctls", branch = "master" }
 virtio-devices = { path = "../virtio-devices" }
 vm-allocator = { path = "../vm-allocator" }

vmm/src/lib.rs

@@ -17,7 +17,6 @@ extern crate serde;
 #[macro_use]
 extern crate serde_derive;
 extern crate serde_json;
-extern crate url;
 extern crate vmm_sys_util;
 #[cfg(test)]
 #[macro_use]