Removed base from cabal config to fix the build.

hask-irc-core/cabal.config

@@ -3,7 +3,6 @@ constraints: ReadArgs ==1.2.2,
              adjunctions ==4.2.1,
              array ==0.5.0.0,
              async ==2.0.2,
-             base ==4.7.0.1,
              base-orphans ==0.3.3,
              basic-prelude ==0.5.0,
              bifunctors ==5,

hask-irc-handlers/cabal.config

@@ -7,7 +7,6 @@ constraints: HTTP ==4000.2.20,
              array ==0.5.0.0,
              async ==2.0.2,
              attoparsec ==0.13.0.0,
-             base ==4.7.0.1,
              base-orphans ==0.3.3,
              basic-prelude ==0.5.0,
              bifunctors ==5,

hask-irc-runner/cabal.config

@@ -7,7 +7,6 @@ constraints: HTTP ==4000.2.20,
              array ==0.5.0.0,
              async ==2.0.2,
              attoparsec ==0.13.0.0,
-             base ==4.7.0.1,
              base-orphans ==0.3.3,
              basic-prelude ==0.5.0,
              bifunctors ==5,