Cleanup: Delaunay 2D, silence Clang-Tidy readability-function-size

This adds a `NOLINT` marker to explicitly silence a warning from
Clang-Tidy's `readability-function-size` rule for the `incircleadapt()`
function in `delaunay_2d.c`.

No functional changes.

source/blender/blenlib/intern/delaunay_2d.c

@@ -4602,7 +4602,7 @@ static double orient2d(const double *pa, const double *pb, const double *pc)
  *  fast, but will run more slowly when the input points are cocircular or
  *  nearly so.
  */
-
+/* NOLINTNEXTLINE: readability-function-size */
 static double incircleadapt(
     const double *pa, const double *pb, const double *pc, const double *pd, double permanent)
 {