Don't mark clang-analyzer as noarch

As the llvm install prefix is multilib-dependent, this is no longer
noarch.

This matches what we already did for compat builds in clang18, but
was not carried over into the big merge spec file.

Author: nikic

llvm.spec

@@ -630,7 +630,6 @@ This package owns the clang resouce directory: $libdir/clang/$version/
 %package -n %{pkg_name_clang}-analyzer
 Summary:	A source code analysis framework
 License:	Apache-2.0 WITH LLVM-exception OR NCSA OR MIT
-BuildArch:	noarch
 Requires:	%{pkg_name_clang} = %{version}-%{release}
 
 %description -n %{pkg_name_clang}-analyzer