FIX: Remove DESCRIPTION tag from Etebase entry in CMakeLists

The cmake logs currently show "Etebase, EteSync" in the logs for the Etebase package.
This isn't great w.r.t semantics, so it is better to remove the DESCRIPTION tag.
1 job for !13 with etesync2resource in 60 minutes and 3 seconds (queued for 457 minutes and 42 seconds)
detached
Status Job ID Name Coverage
  Build
failed #76795
linux kf5-qt5 qt5.14

01:00:03

41.0%
 
Name Stage Failure
failed
linux kf5-qt5 qt5.14 Build The script exceeded the maximum execution time set for the job
------------------------------------------------------------------------------
Uploading artifacts for successful job
Uploading artifacts...
build: found 6083 matching files and directories

WARNING: Uploading artifacts as "archive" to coordinator... failed id=76795 responseStatus=502 Bad Gateway status=502 token=V2gseXiA
WARNING: Retrying... context=artifacts-uploader error=invalid argument
WARNING: Uploading artifacts as "archive" to coordinator... failed id=76795 responseStatus=502 Bad Gateway status=502 token=V2gseXiA
WARNING: Retrying... context=artifacts-uploader error=invalid argument
ERROR: Job failed: execution took longer than 1h0m0s seconds