Revert "Merge pull request #7316 from bayandin/fix-bump-revision"

This reverts commit a7fdc7046f5cda8743591040117e409cd24dae76, reversing
changes made to bfa175d118112989b24908ea16c5a97c1dd011e4.

Library/Homebrew/dev-cmd/bump-revision.rb

@@ -42,14 +42,7 @@ module Homebrew
         [checksum.hash_type, checksum.hexdigest]
       end
 
-      stable_block_given = formula.path.read.include? "  stable do"
-
-      old = if stable_block_given
-        # insert replacement revision before stable block
-        <<~EOS
-          stable do
-        EOS
-      elsif hash_type
+      old = if hash_type
         # insert replacement revision after hash
         <<~EOS
           #{hash_type} "#{old_hash}"
@@ -60,12 +53,8 @@ module Homebrew
           :revision => "#{formula_spec.specs[:revision]}"
         EOS
       end
+      replacement = old + "  revision 1\n"
 
-      replacement = if stable_block_given
-        "revision 1\n  " + old
-      else
-        old + "  revision 1\n"
-      end
     else
       old = "revision #{current_revision}"
       replacement = "revision #{current_revision+1}"