cmMakefile: Simplify custom target 'force' output name generation

Remove unnecessary check of policy CMP0049.  The policy can never
trigger on our internally-generated name because it has no variable
references.

The rename in commit 0ed5ce4cd8 (cmTarget: Rename AddSource method for
backward compatibility., 2014-03-17, v3.1.0-rc1~688^2~17) made it look
like this code path depended on CMP0049.  Then commit 0e1faa28cb
(cmMakefile: Separate custom command setup from actual creation,
2019-09-14, v3.16.0-rc1~85^2) and commit ea1bed34b2 (cmMakefile: Extract
utilities used for creation of custom commands, 2019-09-21,
v3.16.0-rc1~52^2~1) built additional infrastructure to thread that
dependence through the call stack.  Remove it all.

1 files changed, 0 insertions, 7 deletions

diff --git a/Source/cmCustomCommandTypes.h b/Source/cmCustomCommandTypes.h
index 5c900ce1e2..324da9ef2b 100644
--- a/Source/cmCustomCommandTypes.h
+++ b/Source/cmCustomCommandTypes.h
@@ -27,10 +27,3 @@ enum class cmObjectLibraryCommands
   Reject,
   Accept
 };
-
-/** Utility target output source file name.  */
-struct cmUtilityOutput
-{
-  std::string Name;
-  std::string NameCMP0049;
-};