feat(Bonus Pagamenti Digitali): [#176484406] Remove first place from supercashback ranking

[fabriziofff]

Short description

This pr removes the first place from the supercashback ranking details.

position === 1st position	1<position<last_position

position === last_position	position > last_position

List of changes proposed in this pull request

• Remove FirstPositionItem component.
• Remove FirstPositionItem entry fromSuperCashbackRanking.tsx

How to test

Describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.

[pagopa-github-bot]

Affected stories

• 🌟 #176484406: Come CIT voglio vedere la mia posizione in classifica, rispetto a quella dell 100.000° utente

Generated by 🚫 dangerJS against fab20cd

[codecov]

Codecov Report

Merging #2725 (fab20cd) into master (ff638a4) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2725      +/-   ##
==========================================
- Coverage   51.75%   51.74%   -0.02%     
==========================================
  Files         751      750       -1     
  Lines       21114    21109       -5     
  Branches     4020     3693     -327     
==========================================
- Hits        10928    10923       -5     
  Misses      10144    10144              
  Partials       42       42              

Impacted Files	Coverage Δ
...ents/superCashbackRanking/SuperCashbackRanking.tsx	65.00% <100.00%> (-0.86%)	⬇️

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