Code cleanup (#39)

* Code cleanup

* Removed unused source file

src/utilities/checks.rs

@@ -4,11 +4,11 @@ use serde::{Deserialize, Serialize};
 pub struct Checks {}
 
 impl Checks {
-    pub fn is_numeric(text: &String) -> bool {
+    pub fn _is_numeric(text: &String) -> bool {
         text.parse::<f64>().is_ok()
     }
 
-    pub fn index_of_item_in_container<F>(container: &String, item: &char, func: F) -> i32
+    pub fn _index_of_item_in_container<F>(container: &String, item: &char, func: F) -> i32
     where
         F: Fn(&char, &char) -> bool,
     {

src/utilities/string.rs

@@ -1,4 +1,3 @@
-
 pub fn o_to_string(val: &std::ffi::OsString) -> Result<std::string::String, std::io::Error> {
     match val.clone().into_string() {
         Ok(value) => Ok(value),