tomahawk-qt5: drop hostmakedepends provided by build_style

srcpkgs/tomahawk-qt5/template

@@ -16,7 +16,7 @@ configure_args="-DBUILD_RELEASE=ON \
  -DTAGLIB_MIN_VERSION=1.10 \
  $(vopt_if kde '-DWITH_KDE4=ON' '-DWITH_KDE4=OFF') \
  $(vopt_if upower '-DWITH_UPOWER=ON' '-DWITH_UPOWER=OFF')"
-hostmakedepends="cmake pkg-config"
+hostmakedepends="pkg-config"
 makedepends="boost-devel Lucene++-devel qt5-devel taglib-devel sparsehash
  gnutls-devel qt5-webkit-devel qca-qt5-devel attica-qt5-devel qtkeychain-qt5-devel
  qt5-svg-devel qt5-tools-devel phonon-qt5-devel liblastfm-qt5-devel quazip-qt5-devel