[fix]: resolved C linting error

Author: Shivam-1827

lib/node_modules/@stdlib/math/base/special/roundn/src/addon.c

@@ -16,26 +16,7 @@
 * limitations under the License.
 */
 
-#include <node_api.h>
-#include <math.h>
 #include "stdlib/math/base/special/roundn.h"
 #include "stdlib/math/base/napi/binary.h"
 
-double stdlib_base_roundn(double x, int n) {
-    double factor = pow(10, n);
-    return round(x / factor) * factor;
-}
-
-NAPI_MODULE_INIT() {
-    napi_value fn;
-    napi_status status = napi_create_function(env, NULL, 0, stdlib_base_roundn, NULL, &fn);
-    if (status != napi_ok) {
-        napi_throw_error(env, NULL, "Unable to create function");
-        return NULL;
-    }
-
-    return fn;
-}
-
-
 STDLIB_MATH_BASE_NAPI_MODULE_DI_D(stdlib_base_roundn)