Revert "fix issues with unicode input"

"time lex-pass -a no-ip" works, but
"time lex-pass -a id" yells about "resource busy (file is locked)"

This reverts commit fe512ef.

src/LexPassUtil.hs

@@ -7,7 +7,6 @@ import Control.Monad.State
 import Data.Binary
 import Data.Data
 import Data.Generics
-import Data.String
 import FUtil
 import HSH
 import Lang.Php.Ast
@@ -178,7 +177,7 @@ parseAndCache cacheAsts codeDir subPath = do
     astFilename = astPath codeDir subPath
     regen = do
       hPutStrLn stderr "- Parsing"
-      c <- readFile $ codeDir </> subPath
+      c <- readFileStrict $ codeDir </> subPath
       case runParser parse () subPath c of
         Left err -> error $ show err
         Right ast -> do
@@ -197,7 +196,7 @@ parseAndCache cacheAsts codeDir subPath = do
         else regen
     else do
       hPutStrLn stderr "- Parsing (always)"
-      c <- readFile $ codeDir </> subPath
+      c <- readFileStrict $ codeDir </> subPath
       return $ case runParser parse () subPath c of
         Left err -> error $ show err
         Right ast -> ast