fdo#75757: remove inheritance to std::vector
fdo#75757: remove inheritance to std::vector

from StyleTreeArr_Impl.

Change-Id: I44621f913fc1b7ce0da9f41e4e0864edaea474b2
Reviewed-on: https://gerrit.libreoffice.org/11826
Reviewed-by: David Tardon <120ec0d1a1a64b2795847ed1f99512646e9f2768@redhat.com>
Tested-by: David Tardon <120ec0d1a1a64b2795847ed1f99512646e9f2768@redhat.com>

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core