Revert "black box field benches"

This reverts commit 8eae119.
oops

math/benches/criterion_field.rs

@@ -5,9 +5,7 @@ use lambdaworks_math::{
     field::fields::{
         fft_friendly::{
             stark_252_prime_field::{MontgomeryConfigStark252PrimeField, Stark252PrimeField},
-            u64_mersenne_montgomery_field::{
-                Mersenne31MontgomeryPrimeField, MontgomeryConfigMersenne31PrimeField,
-            },
+            u64_mersenne_montgomery_field::{MontgomeryConfigMersenne31PrimeField, Mersenne31MontgomeryPrimeField},
         },
         montgomery_backed_prime_fields::IsModulus,
     },
@@ -187,12 +185,13 @@ pub fn u64_mersenne_montgomery_field_ops_benchmarks(c: &mut Criterion) {
     group.bench_with_input("bitxor", &(x, y), |bench, (&x, &y)| {
         bench.iter(|| black_box(black_box(x) ^ black_box(y)));
     });
+
 }
 
 pub fn mersenne31_field_ops_benchmark(c: &mut Criterion) {
     let mut group = c.benchmark_group("Mersenne31 operations");
     let (x, y) = u32_utils::get_field_elements();
-
+    
     group.bench_with_input("add", &(x, y), |bench, (x, y)| {
         bench.iter(|| black_box(black_box(x) + black_box(y)));
     });
@@ -203,7 +202,7 @@ pub fn mersenne31_field_ops_benchmark(c: &mut Criterion) {
 
     group.bench_with_input("pow by 1", &x, |bench, x| {
         bench.iter(|| black_box(black_box(x).pow(black_box(1_u64))));
-    });
+    });    
 
     group.bench_with_input("square", &x, |bench, x| {
         bench.iter(|| black_box(black_box(x).square()));
@@ -265,9 +264,9 @@ pub fn mersenne31_field_ops_benchmark(c: &mut Criterion) {
 }
 
 criterion_group!(
-    field_benches,
+    starkfp,
     starkfield_ops_benchmarks,
     u64_mersenne_montgomery_field_ops_benchmarks,
     mersenne31_field_ops_benchmark
 );
-criterion_main!(field_benches);
+criterion_main!(starkfp);