Fix: Build error after previous cleanup commit

The prototype didn't match the definition anymore.

source/blender/modifiers/intern/MOD_laplaciansmooth.c

@@ -66,8 +66,6 @@ struct BLaplacianSystem {
 };
 typedef struct BLaplacianSystem LaplacianSystem;
 
-static void required_data_mask(Object *ob, ModifierData *md, CustomData_MeshMasks *r_cddata_masks);
-static bool is_disabled(const struct Scene *scene, ModifierData *md, bool useRenderParams);
 static float compute_volume(const float center[3],
                             float (*vertexCos)[3],
                             const MPoly *mpoly,