remove unused code

Author: ikehara

cmd/abigen/.gitignore

@@ -1,9 +1,3 @@
 # abigen
 
-A go-ethereum like contract call code generator from ABI json
-
-## Test
-
-```
-$ make example
-```
+A go-ethereum like contract call code generator

cmd/abigen/Makefile

@@ -1,11 +1,7 @@
 
 .PHONY: test
-test: gen-example
+test:
+	(cd ../../hmcdk/genabi && cargo run ../../example/token/src/lib.rs) > example/token.json
 	go build
 	./cligen --outdir example --name token --package main --abi example/token.json
 	(cd example && go build)
-
-.PHONY: gen-example
-gen-example:
-	mkdir -p example
-	(cd ../../hmcdk/genabi && cargo run ../../example/token/src/lib.rs) > example/token.json