Remove submodule mirai-console

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "mirai-console"]
-	path = mirai-console
-	url = https://github.com/mamoe/mirai-console.git

.idea/vcs.xml

@@ -24,6 +24,5 @@
   </component>
   <component name="VcsDirectoryMappings">
     <mapping directory="" vcs="Git" />
-    <mapping directory="$PROJECT_DIR$/mirai-console" vcs="Git" />
   </component>
 </project>

mirai-console

@@ -1 +0,0 @@
-Subproject commit 538dd66e7263311def3749063a5696baaff8ac39