Remove some dead code from wasmtime-jit (#3225)

Looks like nothing is actually using these methods, so let's remove
them.

crates/jit/src/code_memory.rs

@@ -26,15 +26,6 @@ impl CodeMemoryEntry {
             unwind_info_len,
         })
     }
-
-    // Note that this intentionally excludes any unwinding information, if
-    // present, since consumers largely are only interested in code memory
-    // itself.
-    fn range(&self) -> (usize, usize) {
-        let start = self.mmap.as_ptr() as usize;
-        let end = start + self.text_len;
-        (start, end)
-    }
 }
 
 impl Drop for CodeMemoryEntry {
@@ -149,13 +140,6 @@ impl CodeMemory {
         unsafe { &mut *body_ptr }
     }
 
-    /// Returns all published segment ranges.
-    pub fn published_ranges<'a>(&'a self) -> impl Iterator<Item = (usize, usize)> + 'a {
-        self.entries[..self.published]
-            .iter()
-            .map(|entry| entry.range())
-    }
-
     /// Allocates and copies the ELF image code section into CodeMemory.
     /// Returns references to functions and trampolines defined there.
     pub fn allocate_for_object<'a, 'b>(

crates/jit/src/instantiate.rs

@@ -129,6 +129,7 @@ pub struct TypeTables {
 /// Container for data needed for an Instance function to exist.
 pub struct ModuleCode {
     range: (usize, usize),
+    #[allow(dead_code)]
     code_memory: CodeMemory,
     #[allow(dead_code)]
     dbg_jit_registration: Option<GdbJitImageRegistration>,
@@ -284,11 +285,6 @@ impl CompiledModule {
             .expect("defined function should be present")
     }
 
-    /// Returns all ranges covered by JIT code.
-    pub fn jit_code_ranges<'a>(&'a self) -> impl Iterator<Item = (usize, usize)> + 'a {
-        self.code.code_memory.published_ranges()
-    }
-
     /// Returns module's JIT code.
     pub fn code(&self) -> &Arc<ModuleCode> {
         &self.code