fix(release): drop bogus mips64 hardfloat suffix from archive names

The archive name template hardcoded mips64_hardfloat /
mips64le_hardfloat suffixes even though gomips is set to softfloat,
producing files named *_hardfloat.tar.gz that actually contain
softfloat builds. Drop the suffix entirely and let the default
{{ .Arch }} branch handle them — keeping a single softfloat build per
mips arch and naming it accurately.

Author: xvzc

.goreleaser.yaml

@@ -63,8 +63,6 @@ archives:
       {{- .Os }}_
       {{- if eq .Arch "386" }}i386
       {{- else if eq .Arch "amd64" }}x86_64
-      {{- else if eq .Arch "mips64" }}mips64_hardfloat
-      {{- else if eq .Arch "mips64le" }}mips64le_hardfloat
       {{- else }}{{ .Arch }}{{ end -}}
     formats: ['tar.gz']
     # Explicitly list builds to include (optional but good for clarity)