Tweak release binaries

- Remove version from file names to avoid version redundancy in download URL e.g.:
    https://github.com/airshipit/airshipctl/releases/download/v2.0.0/airshipctl_2.0.0_linux_amd64.tar.gz
- Remove unuseful windows binaries

Change-Id: Iaa07faf535829ac0c06e5a907f5af2bf2ce2a2ae
Signed-off-by: Sean Eagan <seaneagan1@gmail.com>

.goreleaser.yaml

@@ -39,17 +39,11 @@ builds:
     goos:
       - windows
 archives:
-  - name_template: "{{ .Binary }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}"
+  - name_template: "{{ .Binary }}_{{ .Os }}_{{ .Arch }}"
     id: nix
     builds: [linux, darwin]
     format: tar.gz
     files:
       - none*
-  - name_template: "{{ .Binary }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}"
-    id: windows
-    builds: [windows]
-    format: zip
-    files:
-      - none*
 release:
   draft: true