remove default test 'askmethod' from Fedora_17_Install_Results_Template

[Hongqing Yang]

Hi, gang,

I would like to remove the following test case from Fedora_17_Install_Results_Template
since 'askmethod' has been removed.
https://fedoraproject.org/wiki/QA:Testcase_install_repository_HTTP/FTP_default
https://fedoraproject.org/wiki/QA:Testcase_install_repository_NFS_default
https://fedoraproject.org/wiki/QA:Testcase_install_repository_NFSISO_default
https://fedoraproject.org/wiki/QA:Testcase_install_repository_Hard_drive_default

Hongqing