Revert "Fix one-off index problem when copying collision contexts"

This reverts commit db55f08.

Apparently it causes another problem for the last timeframe in
an anchoredMC simulation. Reverting for now and taking another look.

Author: sawenzel

DataFormats/simulation/src/DigitizationContext.cxx

@@ -708,7 +708,7 @@ DigitizationContext DigitizationContext::extractSingleTimeframe(int timeframeid,
     auto tf_ranges = timeframeindices.at(timeframeid);
 
     auto startindex = std::get<0>(tf_ranges);
-    auto endindex = std::get<1>(tf_ranges) + 1; // +1 due to endindex being "including"
+    auto endindex = std::get<1>(tf_ranges);
     auto earlyindex = std::get<2>(tf_ranges);
 
     if (earlyindex >= 0) {