Update cranelift-meta's Cargo.toml to reflect that it's not published.

lib/codegen/Cargo.toml

@@ -22,7 +22,7 @@ target-lexicon = { version = "0.0.3", default-features = false }
 # accomodated in `tests`.
 
 [build-dependencies]
-cranelift-meta = { path = "meta", version = "0.17.0-alpha" }
+cranelift-meta = { path = "meta", version = "0.0.0" }
 
 [features]
 # The "std" feature enables use of libstd. The "core" feature enables use

lib/codegen/meta/Cargo.toml

@@ -1,18 +1,10 @@
 [package]
 name = "cranelift-meta"
 authors = ["The Cranelift Project Developers"]
-version = "0.17.0"
+version = "0.0.0"
 description = "Metaprogram for cranelift-codegen code generator library"
 license = "Apache-2.0 WITH LLVM-exception"
 documentation = "https://cranelift.readthedocs.io/"
 repository = "https://github.com/CraneStation/cranelift"
 keywords = ["compile", "compiler", "jit"]
-
-[dependencies]
-# It is a goal of the cranelift-codegen crate to have minimal external dependencies.
-# Please don't add any unless they are essential to the task of creating binary
-# machine code.
-
-[badges]
-maintenance = { status = "experimental" }
-travis-ci = { repository = "CraneStation/cranelift" }
+publish = false