Makefile: remove unwanted files from compose/PhpSpreadsheet lib. Should not be...

Makefile: remove unwanted files from compose/PhpSpreadsheet lib. Should not be included in QFQ package.

Makefile

@@ -80,7 +80,7 @@ bootstrap: .npmpackages .plantuml_install .virtual_env
 basic: .npmpackages .virtual_env
 	npm update
 	grunt default
-	cd extension/Resources/Private; composer update; rm -rf .github bin docs samples .g* .s* .t* C* c* m* p*
+	cd extension/Resources/Private; composer update; cd vendor/phpoffice/phpspreadsheet; rm -rf .github bin docs samples .g* .s* .t* C* c* m* p*
 
 .plantuml_install: .support_plantuml
 	wget --no-check-certificate -O support/plantuml/plantuml.jar 'https://downloads.sourceforge.net/project/plantuml/plantuml.jar'