Revert "Add --prefer-source to composer params to workaround GitHub API limits"
Revert "Add --prefer-source to composer params to workaround GitHub API limits"

This reverts commit daad042ce66836ba988e30be2418178aa3c5f586 as it does
not seem to help at all.

ujjwalwahi/error-reporting-server,madhuracj/error-reporting-server,madhuracj/error-reporting-server,ujjwalwahi/error-reporting-server,ujjwalwahi/error-reporting-server,devenbansod/error-reporting-server,devenbansod/error-reporting-server,phpmyadmin/error-reporting-server,phpmyadmin/error-reporting-server,devenbansod/error-reporting-server,madhuracj/error-reporting-server,phpmyadmin/error-reporting-server