Revert "cve-check: Modify judgment processing using "=" in version comparison"

Revert "cve-check: Modify judgment processing using "=" in version comparison"

This change introduced a warning if version comparisons failed, but
this is far too common an issue in data that we don't control, so this
shouldn't cause a warning:

WARNING: automake-native-1.16.5-r0 do_cve_check: automake: Failed to compare 1.16.5 = branch_1-9 for CVE-2009-4029
WARNING: subversion-1.14.2-r0 do_cve_check: subversion: Failed to compare 1.14.2 = m1 for CVE-2010-4539
WARNING: subversion-1.14.2-r0 do_cve_check: subversion: Failed to compare 1.14.2 = m2 for CVE-2010-4539
WARNING: subversion-1.14.2-r0 do_cve_check: subversion: Failed to compare 1.14.2 = m3 for CVE-2010-4539
WARNING: subversion-1.14.2-r0 do_cve_check: subversion: Failed to compare 1.14.2 = m4\/m5 for CVE-2010-4539
WARNING: subversion-1.14.2-r0 do_cve_check: subversion: Failed to compare 1.14.2 = m1 for CVE-2010-4644
WARNING: subversion-1.14.2-r0 do_cve_check: subversion: Failed to compare 1.14.2 = m2 for CVE-2010-4644
WARNING: subversion-1.14.2-r0 do_cve_check: subversion: Failed to compare 1.14.2 = m3 for CVE-2010-4644
WARNING: subversion-1.14.2-r0 do_cve_check: subversion: Failed to compare 1.14.2 = m4\/m5 for CVE-2010-4644
WARNING: subversion-1.14.2-r0 do_cve_check: subversion: Failed to compare 1.14.2 = m1 for CVE-2011-0715
WARNING: subversion-1.14.2-r0 do_cve_check: subversion: Failed to compare 1.14.2 = m2 for CVE-2011-0715
WARNING: subversion-1.14.2-r0 do_cve_check: subversion: Failed to compare 1.14.2 = m3 for CVE-2011-0715
WARNING: subversion-1.14.2-r0 do_cve_check: subversion: Failed to compare 1.14.2 = m4\/m5 for CVE-2011-0715
WARNING: automake-1.16.5-r0 do_cve_check: automake: Failed to compare 1.16.5 = branch_1-9 for CVE-2009-4029
WARNING: mpg123-1.32.3-r0 do_cve_check: mpg123: Failed to compare 1.32.3 = pre0.59s for CVE-2003-0577
WARNING: mpg123-1.32.3-r0 do_cve_check: mpg123: Failed to compare 1.32.3 = pre0.59s for CVE-2004-0982
WARNING: mpg123-1.32.3-r0 do_cve_check: mpg123: Failed to compare 1.32.3 = pre0.59s for CVE-2004-1284
WARNING: mpg123-1.32.3-r0 do_cve_check: mpg123: Failed to compare 1.32.3 = pre0.59s_r11 for CVE-2006-3355
WARNING: mpg123-1.32.3-r0 do_cve_check: mpg123: Failed to compare 1.32.3 = pre0.59s for CVE-2007-0578
WARNING: mpg123-1.32.3-r0 do_cve_check: mpg123: Failed to compare 1.32.3 = pre0.59s_r11 for CVE-2007-0578
WARNING: mpg123-1.32.3-r0 do_cve_check: mpg123: Failed to compare 1.32.3 = pre0.59s for CVE-2009-1301
WARNING: mpg123-1.32.3-r0 do_cve_check: mpg123: Failed to compare 1.32.3 = pre0.59s_r11 for CVE-2009-1301

This reverts commit a1989e4197178c2431ceca499e0b4876b233b131.

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>