Remove redundant empty check

Checking a vector for empty, then immediately iterating it doesn't
change anything.  An empty vector will just return immediately.

Tested: No-OP

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: Ibf8b3e5c6481bbd17d24b9b5a43320ebac4b79f4
diff --git a/src/Thresholds.cpp b/src/Thresholds.cpp
index b82a511..f50905a 100644
--- a/src/Thresholds.cpp
+++ b/src/Thresholds.cpp
@@ -212,11 +212,6 @@
 
 void updateThresholds(Sensor* sensor)
 {
-    if (sensor->thresholds.empty())
-    {
-        return;
-    }
-
     for (const auto& threshold : sensor->thresholds)
     {
         if (!findOrder(threshold.level, threshold.direction))