Remove unneeded pub

exercises/03_if/if1.rs

@@ -1,5 +1,5 @@
-pub fn bigger(a: i32, b: i32) -> i32 {
-    // Complete this function to return the bigger number!
+fn bigger(a: i32, b: i32) -> i32 {
+    // TODO: Complete this function to return the bigger number!
     // If both numbers are equal, any of them can be returned.
     // Do not use:
     // - another function call

exercises/03_if/if2.rs

@@ -1,7 +1,7 @@
 // Step 1: Make me compile!
 // Step 2: Get the bar_for_fuzz and default_to_baz tests passing!
 
-pub fn foo_if_fizz(fizzish: &str) -> &str {
+fn foo_if_fizz(fizzish: &str) -> &str {
     if fizzish == "fizz" {
         "foo"
     } else {

exercises/03_if/if3.rs

@@ -1,4 +1,4 @@
-pub fn animal_habitat(animal: &str) -> &'static str {
+fn animal_habitat(animal: &str) -> &'static str {
     let identifier = if animal == "crab" {
         1
     } else if animal == "gopher" {