Remove Python 2 references

Removes references to Python 2 in the README.md and cleanups up some
code that had comments related to Python 2.

Note that this doesn't cleanup the distro packaging because I'm not sure
how those work

Signed-off-by: Joshua Watt <[email protected]>

README.md

@@ -334,8 +334,8 @@ python3 -m unittest -bv
 
 ## Project and maintainer
 
-The bmaptool project implements bmap-related tools and API modules. The
-entire project is written in python and supports python 2.7 and python 3.x.
+The bmaptool project implements bmap-related tools and API modules. The entire
+project is written in python
 
 The project author is Artem Bityutskiy ([email protected]). The project
 is currently maintained by:

src/bmaptool/TransRead.py

@@ -639,15 +639,8 @@ def _print_warning(timeout):
         for timeout in (10, None):
             try:
                 f_obj = opener.open(url, timeout=timeout)
-            # Handling the timeout case in Python 2.7
-            except socket.timeout as err:
-                if timeout is not None:
-                    _print_warning(timeout)
-                else:
-                    raise Error("cannot open URL '%s': %s" % (url, err))
             except URLError as err:
-                # Handling the timeout case in Python 2.6
-                if timeout is not None and isinstance(err.reason, socket.timeout):
+                if timeout is not None:
                     _print_warning(timeout)
                 else:
                     raise Error("cannot open URL '%s': %s" % (url, err))