[TASK] Remove t3lib from the example .htaccess file

Since removing the t3lib folder in TYPO3 6.2, there is
no more reason to keep reference to this folder in the
example .htaccess file.

Resolves: #55265
Releases: 6.2
Change-Id: Ic7f2cff96186551b2aa08c9e785f42c4f8612fce
Reviewed-on: https://review.typo3.org/27017
Reviewed-by: Henrik Ziegenhain
Reviewed-by: Oliver Klee
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer