Add modernize-redundant-void-arg

Enable this check and fix the failures.

Change-Id: I89b13daf1161be40564367562bb9c8c0c459e1d0
Signed-off-by: Ed Tanous <ed@tanous.net>
diff --git a/src/ADCSensor.cpp b/src/ADCSensor.cpp
index cfa2147..d6dcdca 100644
--- a/src/ADCSensor.cpp
+++ b/src/ADCSensor.cpp
@@ -94,7 +94,7 @@
     objServer.remove_interface(association);
 }
 
-void ADCSensor::setupRead(void)
+void ADCSensor::setupRead()
 {
     std::shared_ptr<boost::asio::streambuf> buffer =
         std::make_shared<boost::asio::streambuf>();
@@ -225,7 +225,7 @@
     });
 }
 
-void ADCSensor::checkThresholds(void)
+void ADCSensor::checkThresholds()
 {
     if (!readingStateGood())
     {