TST: remove removed stuff from typing tests

Author: ev-br

numpy/typing/tests/data/pass/lib_utils.py

@@ -17,6 +17,3 @@ def func(a: int) -> bool: ...
 
 np.info(1, output=FILE)
 
-np.source(np.interp, output=FILE)
-
-np.lookfor("binary representation", output=FILE)

numpy/typing/tests/data/pass/numerictypes.py

@@ -23,10 +23,6 @@
 np.sctype2char("S1")
 np.sctype2char(list)
 
-np.cast[int]
-np.cast["i8"]
-np.cast[np.int64]
-
 np.nbytes[int]
 np.nbytes["i8"]
 np.nbytes[np.int64]