Change info message to debug

This message spams the output, and is more of a debug message than an
info message.
diff --git a/daffodil-core/src/main/scala/edu/illinois/ncsa/daffodil/processors/SpecifiedLength.scala b/daffodil-core/src/main/scala/edu/illinois/ncsa/daffodil/processors/SpecifiedLength.scala
index 87c0dfc..1017965 100644
--- a/daffodil-core/src/main/scala/edu/illinois/ncsa/daffodil/processors/SpecifiedLength.scala
+++ b/daffodil-core/src/main/scala/edu/illinois/ncsa/daffodil/processors/SpecifiedLength.scala
@@ -111,7 +111,7 @@
   override def toBriefXML(depthLimit: Int) = combinator.toBriefXML(depthLimit: Int)
 
   final def parse(pstate: PState, endBitPos: Long, e: ElementBase) = {
-    log(LogLevel.Info, "Limiting data to %s bits.", endBitPos)
+    log(LogLevel.Debug, "Limiting data to %s bits.", endBitPos)
     val savedLimit = pstate.bitLimit0b
     val postState1 = pstate.withEndBitLimit(endBitPos)
     val postState2 = combinator.eParser.parse1(postState1, e)