diff --git a/.gitignore b/.gitignore
index 12d44de..a77ff3e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,5 @@
 /*.log
 /*.png
-**/*.db
 /bin/
 /project/**
 /target/
@@ -17,3 +16,6 @@
 /known/
 /unknown/
 /lib/fonts/
+
+# for data/
+/data
diff --git a/data/config.json b/data/config.json
deleted file mode 100644
index 41d3c90..0000000
--- a/data/config.json
+++ /dev/null
@@ -1,32 +0,0 @@
-{
-  "randomSeed" : 20,
-  "port" : 8888,
-  "captchaExpiryTimeLimit" : 5,
-  "throttle" : 10,
-  "threadDelay" : 2,
-  "captchas" : [ {
-    "name" : "FilterChallenge",
-    "allowedLevels" : [ "medium", "hard" ],
-    "allowedMedia" : [ "image/png" ],
-    "allowedInputType" : [ "text" ],
-    "config" : { }
-  }, {
-    "name" : "GifCaptcha",
-    "allowedLevels" : [ "hard" ],
-    "allowedMedia" : [ "image/gif" ],
-    "allowedInputType" : [ "text" ],
-    "config" : { }
-  }, {
-    "name" : "ShadowTextCaptcha",
-    "allowedLevels" : [ "easy" ],
-    "allowedMedia" : [ "image/png" ],
-    "allowedInputType" : [ "text" ],
-    "config" : { }
-  }, {
-    "name" : "RainDropsCaptcha",
-    "allowedLevels" : [ "easy", "medium" ],
-    "allowedMedia" : [ "image/gif" ],
-    "allowedInputType" : [ "text" ],
-    "config" : { }
-  } ]
-}
\ No newline at end of file