When comparing 7.1.0 zip distro vs 7.2.0 zip distro, the latter one removed following directories from default installation:

./domain/data
./domain/data/content

RPM installation creates both directories in default installation. I believe that domain/data/content directory, which is created as empty could be easily removed from the default RPM installation as it is not included in standalone mode anyway:

# rpm -qf /opt/rh/eap7/root/usr/share/wildfly/domain/data
eap7-wildfly-7.2.0-13.Beta_redhat_00002.2.el7eap.noarch
# rpm -qf /opt/rh/eap7/root/usr/share/wildfly/domain/data/content
eap7-wildfly-7.2.0-13.Beta_redhat_00002.2.el7eap.noarch
# rpm -qf /opt/rh/eap7/root/usr/share/wildfly/standalone/data
eap7-wildfly-7.2.0-13.Beta_redhat_00002.2.el7eap.noarch
# rpm -qf /opt/rh/eap7/root/usr/share/wildfly/standalone/data/content
file /opt/rh/eap7/root/usr/share/wildfly/standalone/data/content is not owned by any package

Code responsible for this is on this line:

install -d -m 775 $RPM_BUILD_ROOT%{libdir}/domain/data/content

It was introduced by this commit.

Do you think it is possible to remove /opt/rh/eap7/root/usr/share/wildfly/domain/data/content from default RPM installation?

Reason for this removal is to keep consistent with zip distribution. I don't think there is any functional difference either way. Thus setting level for this as optional.