diff --git a/src/zcl_excel_customui.clas.abap b/src/zcl_excel_customui.clas.abap
deleted file mode 100644
index bb84d58..0000000
--- a/src/zcl_excel_customui.clas.abap
+++ /dev/null
@@ -1,20 +0,0 @@
-CLASS zcl_excel_customui DEFINITION
-  PUBLIC
-  FINAL
-  CREATE PUBLIC .
-
-  PUBLIC SECTION.
-*"* public components of class ZCL_EXCEL_CUSTOMUI
-*"* do not include other source files here!!!
-  PROTECTED SECTION.
-*"* protected components of class ZCL_EXCEL_CUSTOMUI
-*"* do not include other source files here!!!
-  PRIVATE SECTION.
-*"* private components of class ZCL_EXCEL_CUSTOMUI
-*"* do not include other source files here!!!
-ENDCLASS.
-
-
-
-CLASS zcl_excel_customui IMPLEMENTATION.
-ENDCLASS.
diff --git a/src/zcl_excel_customui.clas.xml b/src/zcl_excel_customui.clas.xml
deleted file mode 100644
index 6a5d3d5..0000000
--- a/src/zcl_excel_customui.clas.xml
+++ /dev/null
@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<abapGit version="v1.0.0" serializer="LCL_OBJECT_CLAS" serializer_version="v1.0.0">
- <asx:abap xmlns:asx="http://www.sap.com/abapxml" version="1.0">
-  <asx:values>
-   <VSEOCLASS>
-    <CLSNAME>ZCL_EXCEL_CUSTOMUI</CLSNAME>
-    <LANGU>E</LANGU>
-    <DESCRIPT>Excel customUI</DESCRIPT>
-    <STATE>1</STATE>
-    <CLSCCINCL>X</CLSCCINCL>
-    <FIXPT>X</FIXPT>
-    <UNICODE>X</UNICODE>
-   </VSEOCLASS>
-  </asx:values>
- </asx:abap>
-</abapGit>
diff --git a/src/zcl_excel_customui_button.clas.abap b/src/zcl_excel_customui_button.clas.abap
deleted file mode 100644
index dc72079..0000000
--- a/src/zcl_excel_customui_button.clas.abap
+++ /dev/null
@@ -1,22 +0,0 @@
-CLASS zcl_excel_customui_button DEFINITION
-  PUBLIC
-  FINAL
-  CREATE PUBLIC .
-
-  PUBLIC SECTION.
-
-*"* public components of class ZCL_EXCEL_CUSTOMUI_BUTTON
-*"* do not include other source files here!!!
-    INTERFACES zif_excel_customui_element .
-  PROTECTED SECTION.
-*"* protected components of class ZCL_EXCEL_CUSTOMUI_BUTTON
-*"* do not include other source files here!!!
-  PRIVATE SECTION.
-*"* private components of class ZCL_EXCEL_CUSTOMUI_BUTTON
-*"* do not include other source files here!!!
-ENDCLASS.
-
-
-
-CLASS zcl_excel_customui_button IMPLEMENTATION.
-ENDCLASS.
diff --git a/src/zcl_excel_customui_button.clas.xml b/src/zcl_excel_customui_button.clas.xml
deleted file mode 100644
index dc6bdc9..0000000
--- a/src/zcl_excel_customui_button.clas.xml
+++ /dev/null
@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<abapGit version="v1.0.0" serializer="LCL_OBJECT_CLAS" serializer_version="v1.0.0">
- <asx:abap xmlns:asx="http://www.sap.com/abapxml" version="1.0">
-  <asx:values>
-   <VSEOCLASS>
-    <CLSNAME>ZCL_EXCEL_CUSTOMUI_BUTTON</CLSNAME>
-    <LANGU>E</LANGU>
-    <DESCRIPT>Excel customUI Button</DESCRIPT>
-    <STATE>1</STATE>
-    <CLSCCINCL>X</CLSCCINCL>
-    <FIXPT>X</FIXPT>
-    <UNICODE>X</UNICODE>
-   </VSEOCLASS>
-  </asx:values>
- </asx:abap>
-</abapGit>
diff --git a/src/zif_excel_customui_element.intf.abap b/src/zif_excel_customui_element.intf.abap
deleted file mode 100644
index c588408..0000000
--- a/src/zif_excel_customui_element.intf.abap
+++ /dev/null
@@ -1,7 +0,0 @@
-INTERFACE zif_excel_customui_element
-  PUBLIC .
-
-
-  DATA id TYPE string .
-  DATA label TYPE string .
-ENDINTERFACE.
diff --git a/src/zif_excel_customui_element.intf.xml b/src/zif_excel_customui_element.intf.xml
deleted file mode 100644
index 2c6c2ac..0000000
--- a/src/zif_excel_customui_element.intf.xml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<abapGit version="v1.0.0" serializer="LCL_OBJECT_INTF" serializer_version="v1.0.0">
- <asx:abap xmlns:asx="http://www.sap.com/abapxml" version="1.0">
-  <asx:values>
-   <VSEOINTERF>
-    <CLSNAME>ZIF_EXCEL_CUSTOMUI_ELEMENT</CLSNAME>
-    <LANGU>E</LANGU>
-    <DESCRIPT>Excel customUI element</DESCRIPT>
-    <EXPOSURE>2</EXPOSURE>
-    <STATE>1</STATE>
-    <UNICODE>X</UNICODE>
-   </VSEOINTERF>
-  </asx:values>
- </asx:abap>
-</abapGit>