You can remove language packs from the IBM® Integration Toolkit.
InstallPath\common\jdk\jre\bin\java
-jar InstallPath\tools\plugins\org.eclipse.equinox.launcher_1.3.0.v20130327-1446.jar
-launcher InstallPath\tools\eclipse
-application org.eclipse.equinox.p2.director
-uninstallIU LanguagePack
InstallPath/common/jdk/jre/bin/java
-jar InstallPath/tools/plugins/org.eclipse.equinox.launcher_1.3.0.v20130327-1446.jar
-launcher InstallPath/tools/eclipse
-application org.eclipse.equinox.p2.director
-uninstallIU LanguagePack
For example, to uninstall Language Pack 1 and Language Pack 2 on Windows, where IBM Integration Bus is installed in the default location, type the following command on a single line:
"C:\Program Files\IBM\IIB\10.0.0.n\common\jdk\jre\bin\java"
-jar "C:\Program Files\IBM\IIB\10.0.0.n\tools\plugins\org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar"
-launcher "C:\Program Files\IBM\IIB\10.0.0.n\tools\eclipse"
-application org.eclipse.equinox.p2.director
-uninstallIU com.ibm.etools.iib.toolkit.nl1.feature.group,com.ibm.etools.iib.toolkit.nl2.feature.group
Uninstalling com.ibm.etools.iib.toolkit.nl1.feature.group 10.0.0.v20140911-1900.
Uninstalling com.ibm.etools.iib.toolkit.nl2.feature.group 10.0.0.v20140911-1900.
Operation completed in 53088 ms.