[bsp][renesas]Redundant configuration information is removed

bsp/renesas/ra6m3-hmi-board/.project

@@ -20,7 +20,6 @@
   </buildSpec>
   <natures>
     <nature>org.eclipse.cdt.core.cnature</nature>
-    <nature>org.eclipse.cdt.core.ccnature</nature>
     <nature>org.rt-thread.studio.rttnature</nature>
     <nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
     <nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>