Remove not needed returns

Reason:
	In Rust in such cases `return` is redundant,
	remove it and the semicolon at the EOL
	and the value will be returned

src/precmd.rs

@@ -8,10 +8,10 @@ use clap::{ArgMatches, App, SubCommand};
 
 fn first_char(s: &str) -> String {
   let chars: Vec<char> = s.chars().collect();
-  return match chars.len() {
+  match chars.len() {
     0 => String::from(""),
     _ => chars[0].to_string(),
-  };
+  }
 }
 
 fn fmt_current_path(cwd: &str) -> String {
@@ -61,7 +61,8 @@ fn repo_status(r: Repository) -> String {
   if is_dirty == true {
     out.push(Red.bold().paint("*"));
   }
-  return ANSIStrings(&out).to_string();
+
+  ANSIStrings(&out).to_string()
 }
 
 pub fn display(_sub: &ArgMatches) {
@@ -80,4 +81,4 @@ pub fn display(_sub: &ArgMatches) {
 
 pub fn cli_arguments<'a>() -> App<'a, 'a> {
   SubCommand::with_name("precmd")
-}
+}

src/prompt.rs

@@ -6,8 +6,8 @@ const COMMAND_SYMBOL:&str = "⬢";
 pub fn display(sub_matches: &ArgMatches) {
   let last_return_code = sub_matches.value_of("last_return_code").unwrap();
   let keymap = sub_matches.value_of("keymap").unwrap();
-      
-  
+
+
   let symbol = match keymap {
     "vicmd" => COMMAND_SYMBOL,
     _ => INSERT_SYMBOL,
@@ -23,7 +23,7 @@ pub fn display(sub_matches: &ArgMatches) {
 }
 
 pub fn cli_arguments<'a>() -> App<'a, 'a> {
-  return SubCommand::with_name("prompt")
+  SubCommand::with_name("prompt")
     .arg(
       Arg::with_name("last_return_code")
         .short("r")
@@ -33,5 +33,5 @@ pub fn cli_arguments<'a>() -> App<'a, 'a> {
       Arg::with_name("keymap")
         .short("k")
         .takes_value(true)
-    );
-}
+    )
+}