model replay: less frames and less complexity (#35427)

* Revert "ci: faster model_replay (#34036)"

This reverts commit 847a5ce1f3.

* fix conflict

* trigger on test change

* zst

* give start and end frame

* unused flags

* no print

* whitespace

* fix plotting

* slice correct

* no print

* Just start from beginning

tools/lib/framereader.py

@@ -535,25 +535,3 @@ def FrameIterator(fn, pix_fmt, **kwargs):
   else:
     for i in range(fr.frame_count):
       yield fr.get(i, pix_fmt=pix_fmt)[0]
-
-
-class NumpyFrameReader:
-  def __init__(self, name, w, h, cache_size):
-    self.name = name
-    self.pos = -1
-    self.frames = None
-    self.w = w
-    self.h = h
-    self.cache_size = cache_size
-
-  def close(self):
-    pass
-
-  def get(self, num, count=1, pix_fmt="nv12"):
-    num -= 1
-    q = num // self.cache_size
-    if q != self.pos:
-      del self.frames
-      self.pos = q
-      self.frames = np.load(f'{self.name}_{self.pos}.npy')
-    return [self.frames[num % self.cache_size]]