ci: remove branch detection from release workflow

This workflow will run only based on a tag now.

.github/workflows/publish.yaml

@@ -4,8 +4,6 @@ on:
   push:
     tags:
       - v*
-    branches:
-      - release/**
 
 jobs:
   release:
@@ -15,19 +13,11 @@ jobs:
       - uses: actions/checkout@master
 
       - name: SET CURRENT_VERSION tag
-        if: startsWith(github.ref, 'refs/tags/v')
         run: |
           branchName=$(echo $GITHUB_REF | sed 's/refs\/tags\///' )
           # variable CURRENT_VERSION should not have the "v" used in the branch name
           echo "CURRENT_VERSION=$(echo $branchName | sed 's/v//' )" >> $GITHUB_ENV
 
-      - name: SET CURRENT_VERSION branch
-        if: startsWith(github.ref, 'refs/heads/')
-        run: |
-          branchName=$(echo $GITHUB_REF  | sed 's/refs\/heads\/release\///')
-          # variable CURRENT_VERSION should not have the "v" used in the tag
-          echo "CURRENT_VERSION=$(echo $branchName | sed 's/v//' )" >> $GITHUB_ENV
-
       - name: Update local toolchain
         run: |
           rustup update