commit fa2c95f3a7f0909b5cfed26eddb1145005cd396c
Author: wu.shiming <wushiming@yovole.com>
Date:   Tue Sep 22 11:55:54 2020 +0800

    requirements: Drop os-testr
    
    We've switched to stestr.
    
    Change-Id: I768ae840c850a5b6df38a7f2abf5780d7711b303

diff --git a/lower-constraints.txt b/lower-constraints.txt
index aea6394..e697109 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -38,7 +38,6 @@ netifaces==0.10.4
 openstacksdk==0.18.0
 os-client-config==1.28.0
 os-service-types==1.2.0
-os-testr==1.0.0
 osc-lib==2.0.0
 oslo.concurrency==3.26.0
 oslo.config==5.2.0