V2DF is not supported by MVE, so remove it from the only iterator
which contains it.
gcc/ChangeLog:
* config/arm/iterators.md (MVE_vecs): Remove V2DF.
;; MVE mode iterator.
(define_mode_iterator MVE_types [V16QI V8HI V4SI V2DI TI V8HF V4SF V2DF])
-(define_mode_iterator MVE_vecs [V16QI V8HI V4SI V2DI V8HF V4SF V2DF])
+(define_mode_iterator MVE_vecs [V16QI V8HI V4SI V2DI V8HF V4SF])
(define_mode_iterator MVE_VLD_ST [V16QI V8HI V4SI V8HF V4SF])
(define_mode_iterator MVE_VLD_ST_scatter [V16QI V8HI V4SI V8HF V4SF V2DI])
(define_mode_iterator MVE_VLD_ST_scatter_shifted [V8HI V4SI V8HF V4SF V2DI])