removed unnecessary idea folders

backend/.idea/dataSources.xml

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="DataSourceManagerImpl" format="xml" multifile-model="true">
-    <data-source source="LOCAL" name="data" uuid="0cac75ec-a154-4b0c-a84d-58425c2050de">
-      <driver-ref>sqlite.xerial</driver-ref>
-      <synchronize>true</synchronize>
-      <jdbc-driver>org.sqlite.JDBC</jdbc-driver>
-      <jdbc-url>jdbc:sqlite:$PROJECT_DIR$/pb_data/data.db</jdbc-url>
-      <working-dir>$ProjectFileDir$</working-dir>
-    </data-source>
-  </component>
-</project>

backend/.idea/jpa-buddy.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="JpaBuddyIdeaProjectConfig">
-    <option name="renamerInitialized" value="true" />
-  </component>
-</project>

backend/.idea/misc.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager">
-    <output url="file://$PROJECT_DIR$/out" />
-  </component>
-  <component name="ProjectType">
-    <option name="id" value="jpab" />
-  </component>
-</project>

backend/.idea/modules.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/backend.iml" filepath="$PROJECT_DIR$/backend.iml" />
-    </modules>
-  </component>
-</project>

backend/.idea/vcs.xml

@@ -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>