Remove unused throws clause from package private constructor.
diff --git a/src/main/java/org/apache/commons/net/examples/mail/IMAPExportMbox.java b/src/main/java/org/apache/commons/net/examples/mail/IMAPExportMbox.java
index f98acf9..750c7a7 100644
--- a/src/main/java/org/apache/commons/net/examples/mail/IMAPExportMbox.java
+++ b/src/main/java/org/apache/commons/net/examples/mail/IMAPExportMbox.java
@@ -345,8 +345,7 @@
         private final boolean printMarker;
         private final boolean checkSequence;
 
-        MboxListener(final BufferedWriter bw, final String eol, final boolean printHash, final boolean printMarker, final boolean checkSequence)
-                throws IOException {
+        MboxListener(final BufferedWriter bw, final String eol, final boolean printHash, final boolean printMarker, final boolean checkSequence) {
           this.eol = eol;
           this.printHash = printHash;
           this.printMarker = printMarker;