Bug 501707 - [Tests] Reduce warnings in org.eclipse.test.performance

Revert SuppressWarning that appears in the nightly build.

Change-Id: I3fd5116581148e3f94eab6b4a82261ebdc5c0ee3
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
diff --git a/bundles/org.eclipse.test.performance/src/org/eclipse/test/internal/performance/db/DB.java b/bundles/org.eclipse.test.performance/src/org/eclipse/test/internal/performance/db/DB.java
index bd8dd61..e74ad4c 100644
--- a/bundles/org.eclipse.test.performance/src/org/eclipse/test/internal/performance/db/DB.java
+++ b/bundles/org.eclipse.test.performance/src/org/eclipse/test/internal/performance/db/DB.java
@@ -720,7 +720,6 @@
         if (DEBUG) {
             System.out.print("	- query summaries from DB for scenario pattern '" + scenarioPattern + "'..."); //$NON-NLS-1$ //$NON-NLS-2$
         }
-        @SuppressWarnings("resource")
         ResultSet result = null;
         try {
             final List<SummaryEntry> fingerprints = new ArrayList<>();