Remove 'clang64' from mingw_arch.

It is missing some dependencies.

mingw-w64-octave/PKGBUILD

@@ -7,7 +7,7 @@ pkgdesc="GNU Octave: Interactive programming environment for numerical computati
 url="https://www.octave.org"
 license=('GPL3')
 arch=('any')
-mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64')
+mingw_arch=('mingw32' 'mingw64' 'ucrt64')
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libgfortran"
          "${MINGW_PACKAGE_PREFIX}-lapack"
          "${MINGW_PACKAGE_PREFIX}-arpack"