Remove circleci config

Author: rosylilly

.circleci/config.yml

@@ -1,6 +1,6 @@
 # ZenginCode source data
 
-[![Circle CI](https://img.shields.io/circleci/project/zengin-code/source-data.svg)](https://circleci.com/gh/zengin-code/source-data)
+[![update](https://github.com/zengin-code/source-data/actions/workflows/update.yml/badge.svg)](https://github.com/zengin-code/source-data/actions/workflows/update.yml)
 
 Bank codes and Branch codes for Japanese.
 

README.md

@@ -44,7 +44,7 @@ class ZenginCLI < Thor
     md5_path = File.join(ROOT_DIR, 'data/md5')
 
     src = File.read(csv)
-    old_md5 = File.exists?(md5_path) ? File.read(md5_path).strip : ''
+    old_md5 = File.exist?(md5_path) ? File.read(md5_path).strip : ''
     now_md5 = Digest::MD5.hexdigest(src)
 
     if old_md5 != now_md5