os.linux.ui: Remove redundant query in ResourcesPresentationProvider

os.linux.ui: Remove redundant query in ResourcesPresentationProvider

getEventHoverToolTipInfo would do a full state query then
a single query for each CPU/IRQ.
This patch replaces the single query by reading the full
state results.

Change-Id: I10959152e094674b8276608dddb2fe03368f1d96
Signed-off-by: Loïc Prieur-Drevon <loic.prieurdrevon@gmail.com>
Reviewed-on: https://git.eclipse.org/r/70765
Reviewed-by: Patrick Tasse <patrick.tasse@gmail.com>
Reviewed-by: Hudson CI
Reviewed-by: Genevieve Bastien <gbastien+lttng@versatic.net>
Tested-by: Genevieve Bastien <gbastien+lttng@versatic.net>