NGINX: Remove unused substitutions module. (#12449)

Author: elizabeth-dev

images/nginx/rootfs/build.sh

@@ -32,9 +32,6 @@ export MORE_HEADERS_VERSION=v0.37
 # Check for recent changes: https://github.com/atomx/nginx-http-auth-digest/compare/v1.0.0...atomx:master
 export NGINX_DIGEST_AUTH=v1.0.0
 
-# Check for recent changes: https://github.com/yaoweibin/ngx_http_substitutions_filter_module/compare/v0.6.4...master
-export NGINX_SUBSTITUTIONS=e12e965ac1837ca709709f9a26f572a54d83430e
-
 # Check for recent changes: https://github.com/SpiderLabs/ModSecurity-nginx/compare/v1.0.3...master
 export MODSECURITY_VERSION=v1.0.3
 
@@ -213,9 +210,6 @@ get_src 0c0d2ced2ce895b3f45eb2b230cd90508ab2a773299f153de14a43e44c1209b3 \
 get_src f09851e6309560a8ff3e901548405066c83f1f6ff88aa7171e0763bd9514762b \
         "https://github.com/atomx/nginx-http-auth-digest/archive/$NGINX_DIGEST_AUTH.tar.gz" "nginx-http-auth-digest"
 
-get_src a98b48947359166326d58700ccdc27256d2648218072da138ab6b47de47fbd8f \
-        "https://github.com/yaoweibin/ngx_http_substitutions_filter_module/archive/$NGINX_SUBSTITUTIONS.tar.gz" "ngx_http_substitutions_filter_module"
-
 get_src 32a42256616cc674dca24c8654397390adff15b888b77eb74e0687f023c8751b \
         "https://github.com/SpiderLabs/ModSecurity-nginx/archive/$MODSECURITY_VERSION.tar.gz" "ModSecurity-nginx"
 
@@ -489,7 +483,6 @@ WITH_MODULES=" \
   --add-module=$BUILD_PATH/ngx_devel_kit \
   --add-module=$BUILD_PATH/set-misc-nginx-module \
   --add-module=$BUILD_PATH/headers-more-nginx-module \
-  --add-module=$BUILD_PATH/ngx_http_substitutions_filter_module \
   --add-module=$BUILD_PATH/lua-nginx-module \
   --add-module=$BUILD_PATH/stream-lua-nginx-module \
   --add-module=$BUILD_PATH/lua-upstream-nginx-module \