Update requirements to remove patched py package

This is no longer required. Going back to the base package will
improve stability and compatibility.

Signed-off-by: Eric Ball <eball@linuxfoundation.org>
Change-Id: Ic0fd13adb81ce1f92f06a9a85c5da024df81a9f6
diff --git a/requirements.txt b/requirements.txt
index fbfc319..d0c12ee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,15 +2,14 @@
 flake8
 paramiko
 pexpect
-pylint<=2.10.2
+pylint==3.3.6
 pyyaml
 robotframework
 robotframework-databaselibrary
+robotframework-importresource==0.2.0
 robotframework-kafkalibrary
 robotframework-lint
 robotframework-requests
 robotframework-sshlibrary
 tinydb
 yamllint
-# replace when we can use upstream (needs python 3.6)
-git+https://github.com/zdw/robotframework-importresource@b81b87aabaee0594e966687b41e3674b866f28ee