hotfix: remove shapetracker spam in viz

Author: geohot

Diff for: tinygrad/shape/shapetracker.py

@@ -115,8 +115,9 @@ def real_strides(self, ignore_valid=False) -> tuple[Optional[sint], ...]: return
   def unit_stride_axes(self, ignore_valid=False) -> list[int]: return [i for i,st in enumerate(self.real_strides(ignore_valid)) if st == 1]
 
   def axis_is_masked(self, axis:int) -> bool:
-    _, valid = self.to_indexed_uops()
-    return axis in [x.arg for x in graph_rewrite(valid, symbolic_flat).toposort if x.op is Ops.RANGE]
+    with Context(TRACK_MATCH_STATS=0):
+      _, valid = self.to_indexed_uops()
+      return axis in [x.arg for x in graph_rewrite(valid, symbolic_flat).toposort if x.op is Ops.RANGE]
 
   def simplify(self) -> ShapeTracker:
     if len(self.views) >= 2 and (new_view := self.views[-2] + self.views[-1]) is not None: