Remove unnecessary throw for unexpected exception

Author: olafurpg

semanticdb-javac/src/main/java/com/sourcegraph/semanticdb_javac/SemanticdbTaskListener.java

@@ -74,7 +74,6 @@ public void finished(TaskEvent e) {
                 String.valueOf(e.getSourceFile().toUri().toString()), throwable);
       }
       this.reportException(throwable, e);
-      throw new RuntimeException(ex.getMessage(), throwable);
     }
   }