diff --git a/.idea/dictionaries/atsushisakai.xml b/.idea/dictionaries/atsushisakai.xml
deleted file mode 100644
index d4608ae6..00000000
--- a/.idea/dictionaries/atsushisakai.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<component name="ProjectDictionaryState">
-  <dictionary name="atsushisakai">
-    <words>
-      <w>atsushi</w>
-    </words>
-  </dictionary>
-</component>
\ No newline at end of file
diff --git a/.idea/preferred-vcs.xml b/.idea/preferred-vcs.xml
deleted file mode 100644
index 848cfc44..00000000
--- a/.idea/preferred-vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="PreferredVcsStorage">
-    <preferredVcsName>ApexVCS</preferredVcsName>
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
index 94a25f7f..00000000
--- a/.idea/vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>
\ No newline at end of file