Remove convenience methods priority() and interrupt_id() from mtopi

These methods were simple aliases for ipid() and iid() respectively,
which doesn't follow the crate's pattern of only adding convenience
methods that provide semantic value or logical operations.

Author: KushalMeghani1644

riscv/src/register/mtopi.rs

@@ -13,8 +13,8 @@
 //! let mtopi_val = mtopi::read();
 //!
 //! if mtopi_val.has_interrupt() {
-//!     let interrupt_id = mtopi_val.interrupt_id();
-//!     let priority = mtopi_val.priority();
+//!     let interrupt_id = mtopi_val.iid();
+//!     let priority = mtopi_val.ipid();
 //!     println!("Highest priority interrupt: ID={}, Priority={}", interrupt_id, priority);
 //! } else {
 //!     println!("No interrupts pending");
@@ -53,23 +53,6 @@ impl Mtopi {
     pub fn has_interrupt(&self) -> bool {
         self.iid() != 0
     }
-
-    /// Returns the interrupt priority, with higher values indicating higher priority
-    ///
-    /// This value is only meaningful when `has_interrupt()` returns true.
-    #[inline]
-    pub fn priority(&self) -> usize {
-        self.ipid()
-    }
-
-    /// Returns the interrupt identifier
-    ///
-    /// A value of 0 indicates no interrupt is pending. Non-zero values identify
-    /// specific interrupt sources as defined by the interrupt controller configuration.
-    #[inline]
-    pub fn interrupt_id(&self) -> usize {
-        self.iid()
-    }
 }
 
 #[cfg(test)]
@@ -88,16 +71,12 @@ mod tests {
 
         // Test helper methods
         assert!(!mtopi.has_interrupt());
-        assert_eq!(mtopi.priority(), 0);
-        assert_eq!(mtopi.interrupt_id(), 0);
 
         // Test with some interrupt pending (IID = 11, IPID = 5)
         mtopi = Mtopi::from_bits((11 << 16) | 5);
         test_csr_field!(mtopi, iid: [16, 27]);
         test_csr_field!(mtopi, ipid: [0, 7]);
         assert!(mtopi.has_interrupt());
-        assert_eq!(mtopi.priority(), 5);
-        assert_eq!(mtopi.interrupt_id(), 11);
 
         // Test maximum values for each field
         mtopi = Mtopi::from_bits((0xFFF << 16) | 0xFF);