Delete legacy code from repository

.gitmodules

@@ -1,18 +0,0 @@
-[submodule "oscal"]
-	path = vendor/oscal
-	url = https://github.com/usnistgov/OSCAL.git
-	branch = main
-	ignore = dirty
-
-[submodule "resources/validations/lib/xspec"]
-	path = vendor/xspec
-	url = https://github.com/xspec/xspec.git
-	branch = master
-	ignore = dirty
-
-[submodule "resources/validations/src/schematron"]
-	path = vendor/schematron
-	url = https://github.com/schematron/schematron.git
-	branch = master
-	ignore = dirty
-

Makefile

@@ -6,9 +6,7 @@ help:
 
 # Most of the real work of the build is in sub-project Makefiles.
 include src/content/module.mk
-include src/examples/module.mk
 include src/validations/module.mk
-include src/web/module.mk
 
 .PHONY: help