Remove file non-user facing leagcy header files

Author: eddelbuettel

ChangeLog

@@ -1,3 +1,12 @@
+2024-01-18  Dirk Eddelbuettel  <[email protected]>
+
+	* inst/include/RcppArmadilloAs.h: Remove non-user facing include
+	file, the prefered alternative in RcppArmadillo/ is available
+	* inst/include/RcppArmadilloConfig.h: Idem
+	* inst/include/RcppArmadilloForward.h: Idem
+	* inst/include/RcppArmadilloSugar.h: Idem
+	* inst/include/RcppArmadilloWrap.h: Idem
+
 2023-12-18  Dirk Eddelbuettel  <[email protected]>
 
 	* DESCRIPTION (Version, Date): RcppArmadillo 0.12.6.7.0