tests: remove a couple of unnecessary asserts
tests: remove a couple of unnecessary asserts

end18/psutil,djhaskin987/psutil,zhengzheng/psutil,shiva21/psutil,zhengzheng/psutil,kiranvizru/psutil,tigerneil/psutil,djhaskin987/psutil,kiranvizru/psutil,PFZheng/psutil,AlanZatarain/psutil,tigerneil/psutil,Alwnikrotikz/psutil,vmolsa/psutil,vmolsa/psutil,stupidcache/psutil,marmolu/psutil,end18/psutil,skyshe/psutil,vmolsa/psutil,peter-hst/psutil,tigerneil/psutil,huson2012/psutil,djhaskin987/psutil,PFZheng/psutil,jucapj/psutil,google-code-export/psutil,creativewild/psutil,huson2012/psutil,google-code-export/psutil,skyshe/psutil,nmani1905/psutil,kiranvizru/psutil,peter-hst/psutil,vmolsa/psutil,google-code-export/psutil,nmani1905/psutil,kiranvizru/psutil,creativewild/psutil,marmolu/psutil,anfedorov/psutil,chjwang/psutil,AlanZatarain/psutil,djhaskin987/psutil,end18/psutil,stupidcache/psutil,creativewild/psutil,anfedorov/psutil,chjwang/psutil,end18/psutil,tigerneil/psutil,shiva21/psutil,stupidcache/psutil,skyshe/psutil,skyshe/psutil,huson2012/psutil,google-code-export/psutil,jucapj/psutil,Alwnikrotikz/psutil