fix: remove unimplemented path from fft ext

Author: gbotrel

field/babybear/fft/kernel_amd64.go

@@ -66,38 +66,22 @@ func kerDITNP_{{$ksize}}(a []{{ $.FF }}.Element, twiddles [][]{{ $.FF }}.Element
 {{end}}
 
 func innerDIFWithTwiddlesExt(a []fext.E4, twiddles []{{ .FF }}.Element, start, end, m int) {
-	if !cpu.SupportAVX512 || m < 16 {
-		innerDIFWithTwiddlesGenericExt(a, twiddles, start, end, m)
-		return
-	}
-	//todo: use AVX512
+	innerDIFWithTwiddlesGenericExt(a, twiddles, start, end, m)
 }
 
 func innerDITWithTwiddlesExt(a []fext.E4, twiddles []{{ .FF }}.Element, start, end, m int) {
-	if !cpu.SupportAVX512 || m < 16 {
-		innerDITWithTwiddlesGenericExt(a, twiddles, start, end, m)
-		return
-	}
-	//todo: use AVX512
+	innerDITWithTwiddlesGenericExt(a, twiddles, start, end, m)
 }
 
 
 {{range $ki, $klog2 := $.Kernels}}
 	{{- $ksize := shl 1 $klog2}}
 
 func kerDIFNP_{{$ksize}}Ext(a []fext.E4, twiddles [][]{{ $.FF }}.Element, stage int) {
-	if !cpu.SupportAVX512 {
-		kerDIFNP_{{$ksize}}genericExt(a, twiddles, stage)
-		return
-	}
-	//todo: use AVX512
+	kerDIFNP_{{$ksize}}genericExt(a, twiddles, stage)
 }
 
 func kerDITNP_{{$ksize}}Ext(a []fext.E4, twiddles [][]{{ $.FF }}.Element, stage int) {
-	if !cpu.SupportAVX512 {
-		kerDITNP_{{$ksize}}genericExt(a, twiddles, stage)
-		return
-	}
-	//todo: use AVX512
+	kerDITNP_{{$ksize}}genericExt(a, twiddles, stage)
 }
 {{end}}