InternPool: remove memoized_decl

This is neither a type nor a value. Simplifies `addStrLit` as well as
the many places that switch on `InternPool.Key`.

This is a partial revert of bec29b9e498e08202679aa29a45dab2a06a69a1e.

1 files changed, 1 insertions, 3 deletions

diff --git a/src/codegen.zig b/src/codegen.zig
index 1470b94f1b..a4c88d1258 100644
--- a/src/codegen.zig
+++ b/src/codegen.zig
@@ -610,9 +610,7 @@ pub fn generateSymbol(
                 }
             }
         },
-        .memoized_decl,
-        .memoized_call,
-        => unreachable,
+        .memoized_call => unreachable,
     }
     return .ok;
 }