Removed duplication code in abandon.py
Removed duplication code in abandon.py

code about getting argument is duplicated.
so this line is removed

Change-Id: Id321b999c7dacdb403cd986cbf35f8db62efc157

aosp-mirror/tools_repo,qioixiy/git-repo,TheQtCompany/git-repo,chenzilin/git-repo,codetutil/git-repo,frogbywyplay/git-repo,11NJ/git-repo,nuclearmistake/repo,wavecomp/git-repo,aosp-mirror/tools_repo,gabbayo/git-repo,couchbasedeps/git-repo,wavecomp/git-repo,11NJ/git-repo,dodocat/git-repo,couchbasedeps/git-repo,nuclearmistake/repo,mer-tools/git-repo,TheQtCompany/git-repo,qioixiy/git-repo,mer-tools/git-repo,gabbayo/git-repo,lipro-yocto/git-repo,GerritCodeReview/git-repo,lewixliu/git-repo,codetutil/git-repo,lewixliu/git-repo,chenzilin/git-repo,GerritCodeReview/git-repo,frogbywyplay/git-repo,dodocat/git-repo,lipro-yocto/git-repo