Do not override tag name

From https://github.com/crate-ci/cargo-release/blob/master/docs/faq.md#how-do-i-customize-my-tagging-in-a-workspace

the defaults appear to be what we want.

Author: LegNeato

release.toml

@@ -1,6 +1,5 @@
 pre-release-commit-message = "Release {{version}}"
-tag-message = "Release {{version}}"
-tag-name = "{{version}}"
+tag-message = "Release `{{crate_name}}` {{version}}"
 pre-release-replacements = [
   { file = "CHANGELOG.md", search = "Unreleased", replace = "{{version}}" },
   { file = "CHANGELOG.md", search = "\\.\\.\\.HEAD", replace = "...{{tag_name}}" },