Remove special configuration for xmlpatterns

Commit 8b13ccf0238aecfe2a01e3a2e6d90620a8b9e516 in coin attempted to
incrementally add OpenSuSE 42.1 support module by module, and various
transitions have lead to this file. Meanwhile commit
aa7531ca7d0e8f92c49a54f11460ece647ef73f1 in coin replaced OpenSuSE 13.01
globally with 42.1 for all modules, so this separate treatment is not
needed anymore.

Change-Id: I0e162a64816f7925a5afd5a79614a1e8843d9b7e
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@qt.io>

coin/platform_configs/qtxmlpatterns.txt

-Template                        Target OS           Target arch Compiler    Features
-------------------------------- ------------------- ----------- ----------- -------------------------------------------------------------------------------------
-qtci-linux-openSUSE-42.1-x86_64                                 GCC         DeveloperBuild NoPch