chore(cpu-template-helper): Remove unnecessary comment

The removed comment isn't meaningful.

Signed-off-by: Takahiro Itazuri <[email protected]>

Author: zulinx86

src/cpu-template-helper/Cargo.toml

@@ -4,7 +4,6 @@ version = "1.8.0-dev"
 authors = ["Amazon Firecracker team <[email protected]>"]
 edition = "2021"
 license = "Apache-2.0"
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [[bin]]
 name = "cpu-template-helper"