minor cleanup

src/problems/day01/common.rs

@@ -1,2 +0,0 @@
-pub type Int = u32;
-pub type Line = (Vec<Int>, Vec<Int>);

src/problems/day01/mod.rs

@@ -10,12 +10,12 @@ use nom::{
     IResult,
 };
 
-use self::common::{Int, Line};
-
-mod common;
 pub mod inputs;
 mod test;
 
+type Int = u32;
+type Line = (Vec<Int>, Vec<Int>);
+
 fn parse_single_digit(input: &str) -> IResult<&str, Int> {
     map_opt(anychar, |i: char| i.to_digit(10))(input)
 }

src/problems/day02/mod.rs

@@ -11,7 +11,7 @@ use nom::{
 };
 
 pub mod inputs;
-pub mod test;
+mod test;
 
 type Int = u32;