fix: remove gkr import

Author: ivokub

internal/generator/main.go

@@ -19,7 +19,6 @@ import (
 	"github.com/consensys/gnark-crypto/internal/generator/edwards/eddsa"
 	"github.com/consensys/gnark-crypto/internal/generator/fflonk"
 	fri "github.com/consensys/gnark-crypto/internal/generator/fri/template"
-	"github.com/consensys/gnark-crypto/internal/generator/gkr"
 	"github.com/consensys/gnark-crypto/internal/generator/hash_to_curve"
 	"github.com/consensys/gnark-crypto/internal/generator/hash_to_field"
 	"github.com/consensys/gnark-crypto/internal/generator/iop"