Issue #206 suppress noisy exceptions in "quiteSleep()" method.

hikaricp-java6/src/main/java/com/zaxxer/hikari/util/PoolUtilities.java

@@ -103,7 +103,7 @@ public final class PoolUtilities
          Thread.sleep(millis);
       }
       catch (InterruptedException e) {
-         throw new RuntimeException(e);
+         // I said be quiet!
       }
    }
 

hikaricp/src/main/java/com/zaxxer/hikari/util/PoolUtilities.java

@@ -85,7 +85,7 @@ public final class PoolUtilities
          Thread.sleep(millis);
       }
       catch (InterruptedException e) {
-         throw new RuntimeException(e);
+         // I said be quiet!
       }
    }