Revert "utils/get-developers: make it callable from elsewhere than the toplevel directory"

This reverts commit 62d5558f76.

This actually does not work, as patches contain paths relative to the
toplevel directory as well.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

utils/getdeveloperlib.py

@@ -158,8 +158,6 @@ def parse_developers(basepath=None):
     linen = 0
     if basepath is None:
         basepath = os.getcwd()
-    else:
-        basepath = os.path.abspath(basepath)
     with open(os.path.join(basepath, "DEVELOPERS"), "r") as f:
         files = []
         name = None