Update documentation to remove ctc.enabled flag

Signed-off-by: João Victor Tozatti Risso <joaovictor.risso@gmail.com>

Update documentation to remove ctc.enabled flag
f360935f · João Victor Tozatti Risso · d9804220 · f360935f · f360935f
--- a/doc/library/gpuarray/ctc.txt
+++ b/doc/library/gpuarray/ctc.txt
@@ -8,8 +8,8 @@
    Usage of connectionist temporal classification (CTC) loss Op, requires that
    the `warp-ctc <https://github.com/baidu-research/warp-ctc>`_ library is
-    available. Also, the `config.ctc.enabled` and `config.ctc.root` configuration
+    available. Also, the `config.ctc.root` configuration option must be appropriately
-    options must be appropriately set.
+    set to the directory containing the warp-ctc library files.
 .. note::

--- a/doc/library/tensor/nnet/ctc.txt
+++ b/doc/library/tensor/nnet/ctc.txt
@@ -8,8 +8,8 @@
    Usage of connectionist temporal classification (CTC) loss Op, requires that
    the `warp-ctc <https://github.com/baidu-research/warp-ctc>`_ library is
-    available. Also, the `config.ctc.enabled` and `config.ctc.root` configuration
+    available. Also, the `config.ctc.root` configuration option must be appropriately
-    options must be appropriately set.
+    set to the directory containing the warp-ctc library files.
 .. note::