Make the subprocesses work and return the right sys paths for the different versions

jedi/_compatibility.py

@@ -289,25 +289,3 @@ def utf8_repr(func):
         return func
     else:
         return wrapper
-
-
-try:
-    from subprocess import check_output
-except ImportError:
-    def check_output(*popenargs, **kwargs):
-        """
-        Taken from Python 2.6.
-        """
-        from subprocess import Popen, PIPE, CalledProcessError
-
-        if 'stdout' in kwargs:
-            raise ValueError('stdout argument not allowed, it will be overridden.')
-        process = Popen(stdout=PIPE, *popenargs, **kwargs)
-        output, unused_err = process.communicate()
-        retcode = process.poll()
-        if retcode:
-            cmd = kwargs.get("args")
-            if cmd is None:
-                cmd = popenargs[0]
-            raise CalledProcessError(retcode, cmd, output=output)
-        return output