Remove vendor/autoload.php and vendor/composer/ from Makefile - the problem...

Remove vendor/autoload.php and vendor/composer/ from Makefile - the problem was a autoloader in report/Excel.php

Makefile

@@ -6,7 +6,7 @@ RELEASE_DATE = $(shell date '+%Y%m%d%H%M')
 GIT_REVISION_SHORT = $(shell git rev-parse --short HEAD || true)
 GIT_REVISION_LONG = $(shell git rev-parse HEAD || true)
 
-EXTENSION_CONTENT = Classes Configuration Documentation Source Resources ext_emconf.php ext_localconf.php ext_tables.php ext_icon.png ext_conf_template.txt config.qfq.example.php RELEASE.txt vendor/autoload.php vendor/composer
+EXTENSION_CONTENT = Classes Configuration Documentation Source Resources ext_emconf.php ext_localconf.php ext_tables.php ext_icon.png ext_conf_template.txt config.qfq.example.php RELEASE.txt
 
 DISTDIR=dist