Remove the “--v2 flag identified” information

Remove the “--v2 flag identified” information :--v2 flag identified, flow redirected to the oc-mirror v2 version. PLEASE DO NOT USE that. V2 is still under development and it is not ready to be used.

oc-mirror version 
WARNING: This version information is deprecated and will be replaced with the output from --short. Use --output=yaml|json to get the full version.
Client Version: version.Info{Major:"", Minor:"", GitVersion:"4.16.0-202403070215.p0.gc4f8295.assembly.stream.el9-c4f8295", GitCommit:"c4f829512107f7d0f52a057cd429de2030b9b3b3", GitTreeState:"clean", BuildDate:"2024-03-07T03:46:24Z", GoVersion:"go1.21.7 (Red Hat 1.21.7-1.el9) X:strictfipsruntime", Compiler:"gc", Platform:"linux/amd64"}

always

1) Use `oc-mirror –v2`

Always see the information when use `oc-mirror –v2` --v2 flag identified, flow redirected to the oc-mirror v2 version. PLEASE DO NOT USE that. V2 is still under development and it is not ready to be used.

Since  oc-mirror --v2 is going to be in TechPreview for 4.16, no need to show this information