feat(utils/checks): runtime is finite check

Probably this should be removed...

src/include/serif/utils/checks/finite.hpp

@@ -2,35 +2,10 @@
 
 #include <cmath>
 
-#include "mfem/linalg/vector.hpp"
-#include "mfem/linalg/densemat.hpp"
 
 #include "serif/utils/misc/concepts/numeric.hpp"
 
 namespace serif::utils::checks {
-    // If we have a new backend / new vector and matrix type in the future we can add new overloads
-    inline bool is_finite(const mfem::Vector& vector) {
-        for (int i = 0; i < vector.Size(); ++i) {
-            if (!std::isfinite(vector(i))) {
-                return false;
-            }
-        }
-
-        return true;
-    }
-
-    inline bool is_finite(const mfem::DenseMatrix& matrix) {
-        for (int i = 0; i < matrix.Height(); ++i) {
-            for (int j = 0; j < matrix.Width(); ++j) {
-                if (!std::isfinite(matrix(i, j))) {
-                    return false;
-                }
-            }
-        }
-
-        return true;
-    }
-
     template <typename Scalar>
         requires requires (Scalar x) {{std::isfinite(x)} -> std::convertible_to<bool>; }
     bool is_finite(const Scalar scalar) {