Remove the `From<InternedString> for String` impl.

It's not used.

diff --git a/src/libsyntax_pos/symbol.rs b/src/libsyntax_pos/symbol.rs
index ee4a581123f889e8cf0e656238528988f119718e..231cfb793f84412fa8c58e285758beae7dba8db8 100644 (file)
--- a/src/libsyntax_pos/symbol.rs
+++ b/src/libsyntax_pos/symbol.rs
@@ -840,12 +840,6 @@ fn eq(&self, other: &InternedString) -> bool {
     }
 }
 
-impl std::convert::From<InternedString> for String {
-    fn from(val: InternedString) -> String {
-        val.as_symbol().to_string()
-    }
-}
-
 impl fmt::Debug for InternedString {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         self.with(|str| fmt::Debug::fmt(&str, f))