qt_lib_network_private.pri contains QMAKE_LIBS_OPENSSL/NOLINK entry

The QMAKE_LIBS_OPENSSL/NOLINK entry should not exist.
A naive attempt to fix this failed: https://codereview.qt-project.org/c/qt/qtbase/+/327313

This patch filters simply removes the /nolink suffix from qmake libraries upon encountering them.

With this patch, QMAKE_LIBS_OPENSSL/NOLINK is not written to qt_lib_network_private.pri. But the QMAKE_LIBS_OPENSSL_DEBUG/QMAKE_LIBS_OPENSSL_RELEASE entries are also empty.

That's because QMAKE_LIBS_OPENSSL and QMAKE_LIBS_OPENSSL/NOLINK are now considered to be the same library, but they are actually two separate libraries:
WrapOpenSSL and WrapOpenSSLHeaders.

OpenSSL is the only library that is handled like that. Now, that we can break the qmake build, it might be a chance to get rid of that special case.