cargo: Remove clap from the project dependencies

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "sntpc"
-version = "0.3.0"
+version = "0.3.1"
 description = "Library for making SNTP requests"
 homepage = "https://github.com/vpetrigo/sntpc"
 repository = "https://github.com/vpetrigo/sntpc"
@@ -25,14 +25,14 @@ utils = ["std", "chrono/clock"]
 
 [dependencies]
 log = { version = "~0.4", optional = true }
-clap = { version = "2.33", default-features = false, optional = true }
 chrono = { version = "~0.4", default-features = false, optional = true }
 # requred till this https://github.com/rust-lang/rfcs/pull/2832 is not addressed
 no-std-net = "~0.5"
 
 [dev-dependencies]
 simple_logger = { version = "~1.13" }
 smoltcp = { version = "~0.7", default-features = false, features = ["phy-tap_interface", "socket-udp", "proto-ipv4"] }
+clap = { version = "2.33", default-features = false }
 
 [badges]
 travis-ci = { repository = "vpetrigo/sntpc", branch = "master" }
@@ -43,8 +43,8 @@ required-features = ["std"]
 
 [[example]]
 name = "timesync"
-required-features = ["clap", "utils"]
+required-features = ["utils"]
 
 [[example]]
 name = "smoltcp_request"
-required-features = ["std", "clap"]
+required-features = ["std"]