clippy: Fix redundant_locals

rr_frontend/.cargo/config.toml

@@ -27,7 +27,6 @@ rustflags = [
     "-Aclippy::useless_format",
 
     # clippy::correctness
-    "-Aclippy::redundant_locals",
     "-Aclippy::unused_io_amount",
 
     # clippy::nursery

rr_frontend/translation/src/environment/polonius_info.rs

@@ -1119,7 +1119,6 @@ impl<'a, 'tcx: 'a> PoloniusInfo<'a, 'tcx> {
             return Ok(None);
         };
         let (dest, source) = assignment.as_assign().unwrap();
-        let dest = dest;
         let source = source.clone();
         let location = self.loan_position[loan];
         Ok(Some(LoanPlaces {