remove MULACC (#3459)

* init

* removed mulacc

* is uoptimize the problem?

* lol hax make work temporarily fix l8er

* revert extra/ changes

* clean up

* flaky metal tests?

* add back mulacc for metal

* revert last commit

* try skipping linearizer_failure tests

* skip flammit tests... cuz tests all work locally

* try narrow down exact linearizer failure test

* try 2

* try 4

* generated code is the exact same wtf why CI fails

* code for 15 and 17 are exact same with or without mulacc, this should pass

* try only 1 failure

* try garbage collecting lol...

* try del variables lol

* try gcing after del lol...

* is diskcache the problem???

* try disabling opts cache idk

* try remove hack

* try disable github metal cache...

* try CACHELEVEL=0 :D idk anymore

* try increase newCommandQueueWithMaxCommandBufferCount_, im almost out of ideas...

* revert

* actually not a HACK

* oops

tinygrad/runtime/ops_python.py

@@ -13,7 +13,6 @@ from tinygrad.codegen.kernel import LinearizerOptions
 def exec_alu(arg, dtype, p):
   # TODO: make this complete and correctly honor the dtypes
   # TODO: use this for constant folding
-  if arg == TernaryOps.MULACC: return p[0]*p[1]+p[2]
   if arg == TernaryOps.WHERE: return p[1] if p[0] else p[2]
   if arg == UnaryOps.LOG2: return math.log2(p[0]) if p[0] > 0 else -math.inf if p[0] == 0 else math.nan
   if arg == UnaryOps.EXP2: