Remove unused function

Cargo.lock

@@ -342,7 +342,7 @@ dependencies = [
 name = "cargo-miri"
 version = "0.1.0"
 dependencies = [
- "cargo_metadata 0.9.1",
+ "cargo_metadata 0.11.1",
  "directories",
  "rustc-workspace-hack",
  "rustc_version",
@@ -391,18 +391,6 @@ dependencies = [
  "serde_json",
 ]
 
-[[package]]
-name = "cargo_metadata"
-version = "0.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46e3374c604fb39d1a2f35ed5e4a4e30e60d01fab49446e08f1b3e9a90aef202"
-dependencies = [
- "semver 0.9.0",
- "serde",
- "serde_derive",
- "serde_json",
-]
-
 [[package]]
 name = "cargo_metadata"
 version = "0.11.1"
@@ -1991,7 +1979,6 @@ dependencies = [
 name = "miri"
 version = "0.1.0"
 dependencies = [
- "byteorder",
  "colored",
  "compiletest_rs",
  "env_logger 0.7.1",

compiler/rustc_parse/src/lexer/mod.rs

@@ -439,10 +439,6 @@ impl<'a> StringReader<'a> {
         (lit_kind, id)
     }
 
-    pub fn pos(&self) -> BytePos {
-        self.pos
-    }
-
     #[inline]
     fn src_index(&self, pos: BytePos) -> usize {
         (pos - self.start_pos).to_usize()