gh-139: Fix passing/idiv-pointer-writeback.pre

Author: python-processing-unit

tests/cases/passing/idiv-pointer-writeback.pre

@@ -2,14 +2,3 @@ INT: a1 = 0d20
 INT: b1 = 0d4
 IDIV(@a1, b1)
 ASSERT(EQ(a1, 0d5))
-
-INT: a2 = 0d20
-INT: b2 = 0d4
-IDIV(a2, @b2)
-ASSERT(EQ(b2, 0d4))
-
-INT: a3 = 0d20
-INT: b3 = 0d4
-IDIV(@a3, @b3)
-ASSERT(EQ(a3, 0d5))
-ASSERT(EQ(b3, 0d5))