rustbuild: Remove Mode::Codegen

src/bootstrap/lib.rs

@@ -300,9 +300,6 @@ pub enum Mode {
     /// Build librustc, and compiler libraries, placing output in the "stageN-rustc" directory.
     Rustc,
 
-    /// Build codegen libraries, placing output in the "stageN-codegen" directory
-    Codegen,
-
     /// Build a tool, placing output in the "stage0-bootstrap-tools"
     /// directory. This is for miscellaneous sets of tools that are built
     /// using the bootstrap stage0 compiler in its entirety (target libraries
@@ -572,7 +569,6 @@ impl Build {
         let suffix = match mode {
             Mode::Std => "-std",
             Mode::Rustc => "-rustc",
-            Mode::Codegen => "-codegen",
             Mode::ToolBootstrap => "-bootstrap-tools",
             Mode::ToolStd | Mode::ToolRustc => "-tools",
         };