[vector] Remove explicit std::move Was confusing compilers. Let them figure it out themselves. Makes NotoNastaliqu subsetting/1000 benchmark more than twice faster: Benchmark Time CPU Time Old Time New CPU Old CPU New ------------------------------------------------------------------------------------------------------------------------------------------------------------ BM_subset/subset_glyphs/NotoNastaliqUrdu-Regular.ttf/1000 -0.5064 -0.5065 111 55 110 55 BM_subset/subset_codepoints/NotoNastaliqUrdu-Regular.ttf/1000 -0.5494 -0.5493 132 59 131 59