Python: dataflow regression tests: remove taint tracking tests

they will be reintroduced in an other PR

Author: RasmusWL

python/ql/test/experimental/dataflow/regression/test.py

@@ -212,22 +212,3 @@ def flow_in_generator():
 def flow_from_generator():
     for x in flow_in_generator():
         SINK(x)  # Flow not found
-
-def const_eq_clears_taint():
-    tainted = SOURCE
-    if tainted == "safe":
-        SINK(tainted) # safe  # FP
-    SINK(tainted) # unsafe
-
-def const_eq_clears_taint2():
-    tainted = SOURCE
-    if tainted != "safe":
-        return
-    SINK(tainted) # safe  # FP
-
-def non_const_eq_preserves_taint(x):
-    tainted = SOURCE
-    if tainted == tainted:
-        SINK(tainted) # unsafe
-    if tainted == x:
-        SINK(tainted) # unsafe