Replaced sha256 sum with last modification time check, to verify if a file has been changed in the text editor

Cargo.toml

@@ -37,15 +37,10 @@ toml = "0.5.7"
 tui = { version = "0.13.0", features = ["crossterm"], default-features = false }
 unicode-width = "0.1.7"
 whoami = "1.0.0"
-ring = "0.16.19"
-data-encoding = "2.3.1"
 
 [target.'cfg(any(target_os = "unix", target_os = "macos", target_os = "linux"))'.dependencies]
 users = "0.11.0"
 
-#[patch.crates-io]
-#ftp = { git = "https://github.com/ChristianVisintin/rust-ftp" }
-
 [[bin]]
 name = "termscp"
 path = "src/main.rs"