remove buildable constraint - rely on ecta-plugin to set the correct bounds on the ghc package instead

Author: pepeiborra

plugins/hls-ecta-plugin/hls-ecta-plugin.cabal

@@ -14,10 +14,7 @@ extra-source-files:
   LICENSE
 
 library
-  if impl(ghc > 8.9) && impl(ghc < 9.0)
-    buildable: True
-  else
-    buildable: False
+  buildable: True
   exposed-modules:    Ide.Plugin.Ecta
   build-depends:
       base                  >=4.12 && <5