Remove no-longer-needed math bindings

All these functions are now provided by upstream compiler-builtins, so
there's no need for us to be binding them automatically. The remaining
`Math_*` functions are also no longer needed on nightly after
rust-lang/rust#54257 but that PR isn't on beta,
so we'll need to leave these here for awhile while beta rides the trains

Author: alexcrichton

crates/cli-support/src/js/mod.rs

@@ -748,28 +748,6 @@ impl<'a> Context<'a> {
                 "Math_sinh" => bind_math("(x) { return Math.sinh(x); }"),
                 "Math_tan" => bind_math("(x) { return Math.tan(x); }"),
                 "Math_tanh" => bind_math("(x) { return Math.tanh(x); }"),
-                "cos" => bind_math("(x) { return Math.cos(x); }"),
-                "cosf" => bind_math("(x) { return Math.cos(x); }"),
-                "exp" => bind_math("(x) { return Math.exp(x); }"),
-                "expf" => bind_math("(x) { return Math.exp(x); }"),
-                "log2" => bind_math("(x) { return Math.log2(x); }"),
-                "log2f" => bind_math("(x) { return Math.log2(x); }"),
-                "log10" => bind_math("(x) { return Math.log10(x); }"),
-                "log10f" => bind_math("(x) { return Math.log10(x); }"),
-                "log" => bind_math("(x) { return Math.log(x); }"),
-                "logf" => bind_math("(x) { return Math.log(x); }"),
-                "round" => bind_math("(x) { return Math.round(x); }"),
-                "roundf" => bind_math("(x) { return Math.round(x); }"),
-                "sin" => bind_math("(x) { return Math.sin(x); }"),
-                "sinf" => bind_math("(x) { return Math.sin(x); }"),
-                "pow" => bind_math("(x, y) { return Math.pow(x, y); }"),
-                "powf" => bind_math("(x, y) { return Math.pow(x, y); }"),
-                "exp2" => bind_math("(a) { return Math.pow(2, a); }"),
-                "exp2f" => bind_math("(a) { return Math.pow(2, a); }"),
-                "fmod" => bind_math("(a, b) { return a % b; }"),
-                "fmodf" => bind_math("(a, b) { return a % b; }"),
-                "fma" => bind_math("(a, b, c) { return (a * b) + c; }"),
-                "fmaf" => bind_math("(a, b, c) { return (a * b) + c; }"),
                 _ => continue,
             }