Fix newlines in yabai output

[ZhongXiLu]

Description

Whenever I cmd + f in my Google Chrome to search the web page, the parsing of the yabai windows output fails due to a newline in the output. Google Chrome will prefix the window title with "Find in page\n":

{
  "title": "Find in page\n    Amazon Web Services Sign-In"
}

I'm not sure since when this was broken, possibly since f165275, but reverting this commit still did not fix this issue. I got it fixed by adding the | tr -d '\n' at the end instead.

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

I manually tested this.

Before my commit, it would show "... JSON error..." in the bar if I would cmd + f on a page. After my commit, it works normally.

Test Configuration:

• OS version Sonoma 14.5
• Yabai version yabai-v7.1.1
• Übersicht version Version 1.6 (82)
• Google Chrome version 124.0.6367.209

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings

[Jean-Tinland]

Oh, sorry I must have broken your fix by simplifying the new line cleanup thinking it would still work.