Remove unnecessary arch(javascript) condition

Author: sevanspowell

servant-jsaddle.cabal

@@ -72,7 +72,7 @@ library
     , string-conversions  >=0.3     && <0.5
     , transformers-base   >=0.4.4   && <0.5
 
-  if impl(ghc >=8.0) || arch(javascript)
+  if impl(ghc >=8.0)
     ghc-options: -Wno-redundant-constraints
 
 test-suite spec