diff --git a/Library/Homebrew/cmd/info.rb b/Library/Homebrew/cmd/info.rb
index f586513df1..e2e2a0914c 100644
--- a/Library/Homebrew/cmd/info.rb
+++ b/Library/Homebrew/cmd/info.rb
@@ -174,20 +174,6 @@ module Homebrew
         end
       end
 
-      sig { params(formula_or_cask: T.any(Formula, Cask::Cask)).returns(T::Array[String]) }
-      def self.requirements_lines(formula_or_cask)
-        return [] unless $stdout.tty?
-
-        case formula_or_cask
-        when Formula
-          []
-        when Cask::Cask
-          cask_requirements_lines(formula_or_cask)
-        else
-          T.absurd(formula_or_cask)
-        end
-      end
-
       sig { params(tab: T.any(Tab, Cask::Tab)).returns(String) }
       def self.installation_status(tab)
         # TODO: Deprecate reading `installed_as_dependency`; `installed_on_request`
@@ -267,27 +253,6 @@ module Homebrew
         metadata
       end
 
-      sig { params(cask: Cask::Cask).returns(T::Array[String]) }
-      def self.cask_requirements_lines(cask)
-        macos_requirements = [cask.depends_on.macos, cask.depends_on.maximum_macos].compact
-        requirement = if macos_requirements.present?
-          requirement = macos_requirements.filter_map do |macos_requirement|
-            macos_requirement.display_s.delete_suffix(" (or Linux)").delete_prefix("macOS").strip.presence
-          end
-          requirement = requirement.present? ? "macOS #{requirement.join(", ")}" : "macOS"
-          requirement += " or Linux" if cask.supports_linux?
-          requirement
-        elsif cask.supports_macos? && cask.supports_linux?
-          "macOS or Linux"
-        elsif cask.supports_macos?
-          "macOS"
-        elsif cask.supports_linux?
-          "Linux"
-        end
-
-        requirement ? [requirement] : []
-      end
-
       sig { params(time: T.any(Integer, Time)).returns(String) }
       def self.formatted_time(time)
         time = Time.at(time) if time.is_a?(Integer)
@@ -347,7 +312,7 @@ module Homebrew
       end
 
       private_class_method :formula_metadata_lines, :formatted_time, :pin_path_mtime,
-                           :formula_installs_from_source?, :cask_requirements_lines
+                           :formula_installs_from_source?
 
       private
 
diff --git a/Library/Homebrew/cmd/which-formula.rb b/Library/Homebrew/cmd/which-formula.rb
index 98616e15e0..d360c39aa9 100755
--- a/Library/Homebrew/cmd/which-formula.rb
+++ b/Library/Homebrew/cmd/which-formula.rb
@@ -11,9 +11,6 @@ require "shell_command"
 module Homebrew
   module Cmd
     class WhichFormula < AbstractCommand
-      ENDPOINT = "internal/executables.txt"
-      DATABASE_FILE = T.let((Homebrew::API::HOMEBREW_CACHE_API/ENDPOINT).freeze, Pathname)
-
       include ShellCommand
 
       cmd_args do
diff --git a/Library/Homebrew/test/cmd/which-formula_spec.rb b/Library/Homebrew/test/cmd/which-formula_spec.rb
index cfc09848d3..1d6c671693 100644
--- a/Library/Homebrew/test/cmd/which-formula_spec.rb
+++ b/Library/Homebrew/test/cmd/which-formula_spec.rb
@@ -19,11 +19,9 @@ RSpec.describe Homebrew::Cmd::WhichFormula do
     end
 
     before do
-      # Override DATABASE_FILE to use test environment's HOMEBREW_CACHE
-      test_db_file = HOMEBREW_CACHE/"api"/Homebrew::Cmd::WhichFormula::ENDPOINT
-      stub_const("#{described_class}::DATABASE_FILE", test_db_file)
-
-      db = Homebrew::Cmd::WhichFormula::DATABASE_FILE
+      # Write the database where `brew which-formula` (a Bash command) reads it:
+      # the same path `Homebrew::API.write_executables_file!` writes to.
+      db = Homebrew::API::HOMEBREW_CACHE_API/"internal/executables.txt"
       db.dirname.mkpath
       db.write(<<~EOS)
         foo(1.0.0):foo2 foo3