fix: xml header displayed twice for inFile delta generated

[scolladon]

What does this pull request contains

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• Added for new features.
• Changed for changes in existing functionality.
• Deprecated for soon-to-be removed features.
• Removed for now removed features.
• Fixed for any bug fixes.
• Security in case of vulnerabilities.

Explain your changes

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Remove the duplicated xml header for in File delta generated

[codeclimate]

Code Climate has analyzed commit 25d33ad and detected 0 issues on this pull request.

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[codecov]

Codecov Report

Merging #274 (25d33ad) into main (24766a4) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #274   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           22        22           
  Lines          607       607           
=========================================
  Hits           607       607           

Impacted Files	Coverage Δ
src/service/inFileHandler.js	100.00% <100.00%> (ø)

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