chore: remove obsolete log.example.jsonl and migrate.dsl files

Signed-off-by: zhenyus <zhenyus@mathmast.com>

log.example.jsonl

@@ -1,28 +0,0 @@
-// Logging to File
-{
-  // logging by program
-  "level": "info",
-  "timestamp": 1744776892300,
-  "text": "This is a test log text",
-  "fields": {
-    "foo": "bar"
-  },
-  "context": {
-    "app": "app-name",
-    "env": "alpha",
-    "log_line": 12,
-    "log_file": "auth.py"
-  },
-  "stacktrace": null,
-  // enriched by the OpenTelemetry
-  "kubernetes": {
-    "pod": "pod-name",
-    "node": "node-name",
-    "pod_ip": "pod-ip",
-    "container_name": "container-name",
-    "node_ip": "node-ip",
-    "namespace": "namespace-name",
-  }
-}
-
-// FmtLine: INFO - 2022-05-12 10:34:52 - <log_file:log_line> - {"foo": "bar"} - This is a test log text

migrate.dsl

@@ -1,12 +0,0 @@
-LOAD DATABASE
-     FROM '/home/yaid/projects/groovy/freeleaps.com/freeleaps-ops/gitea.db'
-     INTO postgresql://postgres:X9H2*9M2ZWYmuZ@localhost:5432/gitea
-
-WITH data only,
-     include no drop,
-     create no tables,
-     create no indexes,
-     no truncate,
-     batch rows = 1
-
-excluding table names like 'app_state','oauth2_application','oauth2_authorization_code','oauth2_grant','system_setting','version','notice';