Use abs from the stdlib (#102)

Author: gabrieldemarmiesse

stdlib_extensions/builtins/__init__.mojo

@@ -3,7 +3,7 @@ from ._bytes import bytes, to_bytes
 from ..syscalls.filesystem import read_from_stdin
 from ._hash import custom_hash
 from ._types import Optional
-from ._math import divmod, round, abs
+from ._math import divmod, round
 from ._custom_equality import ___eq__
 
 

stdlib_extensions/builtins/_math.mojo

@@ -19,24 +19,3 @@ fn round(number: Float64) -> Int:
             return int(floor)
         else:
             return int(floor + 1)
-
-
-fn abs(number: Float64) -> Float64:
-    if number < 0:
-        return -number
-    else:
-        return number
-
-
-fn abs(number: Float32) -> Float32:
-    if number < 0:
-        return -number
-    else:
-        return number
-
-
-fn abs(number: Int) -> Int:
-    if number < 0:
-        return -number
-    else:
-        return number

stdlib_extensions/datetime/_timedelta.mojo

@@ -1,9 +1,9 @@
-from ..builtins import divmod, round, abs, list
+from ..builtins import divmod, round, list
 from ..builtins.string import rjust, join
 from ..builtins._generic_list import _cmp_list
 from ..builtins import custom_hash
 from utils.variant import Variant
-
+from math import abs
 
 # TODO: use this in the timedelta constructor
 alias IntOrFloat = Variant[Int, Float64]