[skip ci] Update how to release

Author: backpaper0

how-to-release.md

@@ -77,12 +77,6 @@ git switch master
 git pull
 ```
 
-Create a new branch.
-
-```
-git switch -c prepare-next-snapshot-version
-```
-
 Set a next SNAPSHOT version to pom.xml and commit.
 
 ```
@@ -98,5 +92,3 @@ git commit -m "Prepare a next SNAPSHOT version"
 git push origin master
 ```
 
-Finally, create a new PR and merge it into the master branch.
-