Fix Line has trailing whitespace (TrailingWhitespace)

Changes:
     - Remove trailing white spaces in code

Tested:
     - NA

Change-Id: I6eb73386d46e6f189f127d0a64a5156d3c4c2854
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/lib/dmtf_redfishtool_utils.robot b/lib/dmtf_redfishtool_utils.robot
index b8df802..089bab3 100644
--- a/lib/dmtf_redfishtool_utils.robot
+++ b/lib/dmtf_redfishtool_utils.robot
@@ -60,7 +60,7 @@
     # cmd_args        Commandline arguments.
     # expected_error  Expected error optionally provided in testcase (e.g. 401 /
     #                 authentication error, etc. ).
-    
+
     ${cmd}=  Catenate  ${cmd_args} POST ${uri} --data=${payload}
     Log  ${cmd}
     ${rc}  ${cmd_output}=  Run and Return RC and Output  ${cmd}