Subject: Don’t install anything Ruby

--- a/Makefile
+++ b/Makefile
@@ -1,18 +1,14 @@
 all:
-	make -C docs/api/api apidocs
 
 install:
 	make -C dist install
-	make -C src/api install
 	make -C src/backend install
 
 test:
-	make -C src/api test
 	make -C dist test
 	make -C src/backend test
 
 clean:
-	make -C src/api clean
 
 rubocop:
 	rubocop -D -F --fail-level convention