Fix clippy

datafusion/core/src/physical_plan/aggregates/group_values/row.rs

@@ -181,7 +181,7 @@ impl GroupValues for GroupValuesRows {
  self.hash_table[ht_offset] = self.hashes.len() + 1;
  // also update hash for this slot so it can be used later
  self.hashes.push(hash);
- } else if self.hashes[offset as usize - 1] == hash {
+ } else if self.hashes[offset - 1] == hash {
  // slot is not empty, and hash value match, now need to do equality
  // check
  self.need_equality_check[n_need_equality_check] = row_idx;
@@ -375,7 +375,7 @@ impl GroupValuesRows {
  for i in 0..self.capacity {
  let offset = *table_ptr.add(i);
  if offset != 0 {
- let hash = *hashes_ptr.add(offset as usize - 1);
+ let hash = *hashes_ptr.add(offset - 1);
 
  let mut new_idx = hash as usize & new_bit_mask;
  let mut num_iter = 0;