source/clast.c: insert_loop: drop redundant argument
source/clast.c: insert_loop: drop redundant argument

The "scalar" argument was only used to support the csp option,
but support for this option was removed in 1559b3a (remove csp
option (defaulting to true)).

Signed-off-by: Sven Verdoolaege <e5350bbed4977f5eb8ae1dc6abd9ae59d21ace75@kotnet.org>

UBERTC/cloog,cfx-next/toolchain_cloog-upstream,UBERTC/cloog,evaautomation/cloog,VanirLLVM/toolchain_cloog,SaberMod/cloog-current,SaberMod/cloog-current,UBERTC/cloog,heysion/cloog-clone,heysion/cloog-clone,Distrotech/cloog,epowers/cloog,periscop/cloog,Syllo/cloog,evaautomation/cloog,periscop/cloog,epowers/cloog,epowers/cloog,heysion/cloog-clone,VanirLLVM/toolchain_cloog,VanirLLVM/toolchain_cloog,Syllo/cloog,Distrotech/cloog,cfx-next/toolchain_cloog-upstream,cfx-next/toolchain_cloog-upstream,Distrotech/cloog