Move musl tests to test-framework crate

Signed-off-by: Benjamin Schultzer <benjamin@schultzer.com>

Author: Schultzer

Cargo.toml

@@ -15,23 +15,17 @@ edition = "2018"
 default = ['stable']
 stable = []
 
-# Generate tests which are random inputs and the outputs are calculated with
-# musl libc.
-musl-reference-tests = ['rand']
-
 # Used checked array indexing instead of unchecked array indexing in this
 # library.
 checked = []
 
 [workspace]
 members = [
   "crates/compiler-builtins-smoke-test",
+  "crates/libm-test"
 ]
 
 [dev-dependencies]
 no-panic = "0.1.8"
 rand = "0.6.5"
 paste = "0.1.5"
-
-[build-dependencies]
-rand = { version = "0.6.5", optional = true }