Update parser Makefile (#501)

### Description

* Remove unused Makefile target
* Put executable files in a `bin/` directory

parser/.gitignore

@@ -1,2 +1,2 @@
 .env
-parser-app
+bin/*

parser/Makefile

@@ -1,19 +1,9 @@
 SHELL := /bin/bash
 
 
-## help: print this help message
-.PHONY: help
-help:
-	@echo 'Usage:'
-	@sed -n 's/^##//p' ${MAKEFILE_LIST} | column -t -s ':' |  sed -e 's/^/ /'
-
 build:
-	go build -o parser-app cmd/main.go
+	go build -o bin/service cmd/main.go
 	
-doc:
-	swag init -pd
-
-
 test:
 	go test -v -cover ./...