arm: [MVE intrinsics] remove vshlcq useless expanders

Since we rewrote the implementation of vshlcq intrinsics, we no longer
need these expanders.

2024-08-28  Christophe Lyon  <christophe.lyon@linaro.org>

	gcc/
	* config/arm/arm-builtins.cc
	(arm_ternop_unone_none_unone_imm_qualifiers)
	(-arm_ternop_none_none_unone_imm_qualifiers): Delete.
	* config/arm/arm_mve_builtins.def (vshlcq_m_vec_s)
	(vshlcq_m_carry_s, vshlcq_m_vec_u, vshlcq_m_carry_u): Delete.
	* config/arm/mve.md (mve_vshlcq_vec_<supf><mode>): Delete.
	(mve_vshlcq_carry_<supf><mode>): Delete.
	(mve_vshlcq_m_vec_<supf><mode>): Delete.
	(mve_vshlcq_m_carry_<supf><mode>): Delete.