remove unnecessary mutable self-borrows

src/services/apt.rs

@@ -86,7 +86,7 @@ impl Apt {
         unsafe { apt::aptReturnToMenu() }
     }
 
-    pub fn main_loop(&mut self) -> bool {
+    pub fn main_loop(&self) -> bool {
         unsafe {
             match apt::aptMainLoop() {
                 1 => true,

src/services/hid.rs

@@ -89,7 +89,7 @@ impl Hid {
         }
     }
 
-    pub fn scan_input(&mut self) {
+    pub fn scan_input(&self) {
         unsafe { hid::hidScanInput() };
     }