Speculation is it has to do with Floyd Mayweather’s music.
Apparently one of the producers of that song tried to sue WWE and Mayweather over the use of it years back, so that likely is it.
Additionally, the song used a then-uncleared sample so at one point pre-network the DVD/Blu-Rays had to be temporarily pulled from shelves until an agreement could be worked out.
It's a theme with a troubled past. While I'm the last guy to ever say every effort shouldn't be exhausted to preserve original music, in this case a once-used theme has proven to be more trouble than its worth and should just be scrubbed.
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