Comment out files/directories no longer present in upstream 6.6.4:
- startplasma-wayland binary
- phonon_platform plugin dir
- plasma5support plugin dir
- plasma5support data dir
Also escape macros in commented Requires to suppress RPM warning.
GitHub archive URLs without a filename fragment download as just the
version number (e.g. 6.6.4.tar.gz), which confuses %setup when it tries
to cd into the expected %{name}-%{version} directory. Add
#/%{name}-%{version}.tar.gz suffix to ensure correct local filenames
matching the extracted directory names.
