Remove PlatformProvider from pipedv1 config

[khanhtc1202]

What this PR does:

as title

Why we need it:

The PlatformProvider and CloudProvider are no more be used in pipedv1 config

Which issue(s) this PR fixes:

Part of #4980

Does this PR introduce a user-facing change?:

• How are users affected by this change:
• Is this breaking change:
• How to migrate (if breaking change):

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 26.10%. Comparing base (90170ba) to head (459136d).
Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/app/pipedv1/cmd/piped/piped.go	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5511      +/-   ##
==========================================
- Coverage   26.19%   26.10%   -0.10%     
==========================================
  Files         464      464              
  Lines       49815    49684     -131     
==========================================
- Hits        13049    12969      -80     
+ Misses      35733    35687      -46     
+ Partials     1033     1028       -5     

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[Warashi]

👍🏻

[t-kikuc]

It seems good.

How about creating a list of deprecated features in pipedv1 somewhere so that we can announce them without omission?

(e.g. Issue? Label?)

[khanhtc1202]

@t-kikuc That sound good, let do it separately, since this removal change in this PR does not related to deprecated features or not 👀

[t-kikuc]

Yes, of course do it separately.
just reminded before merging👍