removing validation from __init__

Author: Jimmy-INL

pysensors/utils/__init__.py

@@ -3,8 +3,6 @@
 from ._optimizers import constrained_multiclass_solve
 from ._constraints import get_constraind_sensors_indices
 from ._constraints import get_constrained_sensors_indices_linear
-from ._validation import determinant
-from ._validation import relative_reconstruction_error
 from ._norm_calc import exact_n
 from ._norm_calc import max_n
 from ._norm_calc import predetermined
@@ -17,8 +15,6 @@
     "get_constrained_sensors_indices_linear",
     "box_constraints",
     "functional_constraints",
-    "determinant",
-    "relative_reconstruction_error",
     "exact_n",
     "max_n",
     "predetermined"