diff --git a/web_group_by_percentage/i18n/ca.po b/web_group_by_percentage/i18n/ca.po
index 36c10153d..e69de29bb 100644
--- a/web_group_by_percentage/i18n/ca.po
+++ b/web_group_by_percentage/i18n/ca.po
@@ -1,14 +0,0 @@
-# Translation of Odoo Server.
-# This file contains the translation of the following modules:
-#
-msgid ""
-msgstr ""
-"Project-Id-Version: Odoo Server 12.0\n"
-"Report-Msgid-Bugs-To: \n"
-"Last-Translator: Automatically generated\n"
-"Language-Team: none\n"
-"Language: ca\n"
-"MIME-Version: 1.0\n"
-"Content-Type: text/plain; charset=UTF-8\n"
-"Content-Transfer-Encoding: \n"
-"Plural-Forms: nplurals=2; plural=n != 1;\n"
diff --git a/web_group_by_percentage/i18n/es.po b/web_group_by_percentage/i18n/es.po
index 7461f0845..e69de29bb 100644
--- a/web_group_by_percentage/i18n/es.po
+++ b/web_group_by_percentage/i18n/es.po
@@ -1,14 +0,0 @@
-# Translation of Odoo Server.
-# This file contains the translation of the following modules:
-#
-msgid ""
-msgstr ""
-"Project-Id-Version: Odoo Server 12.0\n"
-"Report-Msgid-Bugs-To: \n"
-"Last-Translator: Automatically generated\n"
-"Language-Team: none\n"
-"Language: es\n"
-"MIME-Version: 1.0\n"
-"Content-Type: text/plain; charset=UTF-8\n"
-"Content-Transfer-Encoding: \n"
-"Plural-Forms: nplurals=2; plural=n != 1;\n"
diff --git a/web_group_by_percentage/i18n/pt_BR.po b/web_group_by_percentage/i18n/pt_BR.po
index 7971f5f93..e69de29bb 100644
--- a/web_group_by_percentage/i18n/pt_BR.po
+++ b/web_group_by_percentage/i18n/pt_BR.po
@@ -1,14 +0,0 @@
-# Translation of Odoo Server.
-# This file contains the translation of the following modules:
-#
-msgid ""
-msgstr ""
-"Project-Id-Version: Odoo Server 12.0\n"
-"Report-Msgid-Bugs-To: \n"
-"Last-Translator: Automatically generated\n"
-"Language-Team: none\n"
-"Language: pt_BR\n"
-"MIME-Version: 1.0\n"
-"Content-Type: text/plain; charset=UTF-8\n"
-"Content-Transfer-Encoding: \n"
-"Plural-Forms: nplurals=2; plural=n > 1;\n"
diff --git a/web_group_by_percentage/i18n/zh_CN.po b/web_group_by_percentage/i18n/zh_CN.po
index 4159be77e..e69de29bb 100644
--- a/web_group_by_percentage/i18n/zh_CN.po
+++ b/web_group_by_percentage/i18n/zh_CN.po
@@ -1,14 +0,0 @@
-# Translation of Odoo Server.
-# This file contains the translation of the following modules:
-#
-msgid ""
-msgstr ""
-"Project-Id-Version: Odoo Server 12.0\n"
-"Report-Msgid-Bugs-To: \n"
-"Last-Translator: Automatically generated\n"
-"Language-Team: none\n"
-"Language: zh_CN\n"
-"MIME-Version: 1.0\n"
-"Content-Type: text/plain; charset=UTF-8\n"
-"Content-Transfer-Encoding: \n"
-"Plural-Forms: nplurals=1; plural=0;\n"