remove cfg(stage0) version of Eq, not needed for tests

Author: nikomatsakis

src/test/bench/shootout-mandelbrot.rs

@@ -23,17 +23,6 @@ struct cmplx {
     im: f64
 }
 
-#[cfg(stage0)]
-impl cmplx : ops::Mul<cmplx,cmplx> {
-    pure fn mul(x: cmplx) -> cmplx {
-        cmplx {
-            re: self.re*x.re - self.im*x.im,
-            im: self.re*x.im + self.im*x.re
-        }
-    }
-}
-#[cfg(stage1)]
-#[cfg(stage2)]
 impl cmplx : ops::Mul<cmplx,cmplx> {
     pure fn mul(x: &cmplx) -> cmplx {
         cmplx {
@@ -43,17 +32,6 @@ impl cmplx : ops::Mul<cmplx,cmplx> {
     }
 }
 
-#[cfg(stage0)]
-impl cmplx : ops::Add<cmplx,cmplx> {
-    pure fn add(x: cmplx) -> cmplx {
-        cmplx {
-            re: self.re + x.re,
-            im: self.im + x.im
-        }
-    }
-}
-#[cfg(stage1)]
-#[cfg(stage2)]
 impl cmplx : ops::Add<cmplx,cmplx> {
     pure fn add(x: &cmplx) -> cmplx {
         cmplx {