From 9981295beaf13c3fc989b3c7dd891aea40a1542b Mon Sep 17 00:00:00 2001
From: fis <jm.yuan@outlook.com>
Date: Wed, 15 Sep 2021 19:17:25 +0800
Subject: [PATCH] Remove old symbol.  Remove doc.

---
 python-package/xgboost/core.py | 17 +++++------------
 src/data/data.cc               |  2 --
 2 files changed, 5 insertions(+), 14 deletions(-)

diff --git a/python-package/xgboost/core.py b/python-package/xgboost/core.py
index 7b28d7ea2e52..8f6b3b6fde38 100644
--- a/python-package/xgboost/core.py
+++ b/python-package/xgboost/core.py
@@ -561,13 +561,7 @@ def __init__(
         feature_types :
 
             Set types for features.  When `enable_categorical` is set to `True`, string
-            "c" represents categorical data type.  For numerical data, it can be one for
-            the following:
-
-                - "q" for quantitive
-                - "float" for float
-                - "i" for indicator
-                - "int" for integer
+            "c" represents categorical data type.
 
         nthread : integer, optional
             Number of threads to use for loading data when parallelization is
@@ -586,11 +580,10 @@ def __init__(
 
             .. versionadded:: 1.3.0
 
-            Experimental support of specializing for categorical features.  Do
-            not set to True unless you are interested in development.
-            Currently it's only available for `gpu_hist` tree method with 1 vs
-            rest (one hot) categorical split.  Also, JSON serialization format,
-            `gpu_predictor` and pandas input are required.
+            Experimental support of specializing for categorical features.  Do not set to
+            True unless you are interested in development.  Currently it's only available
+            for `gpu_hist` tree method with 1 vs rest (one hot) categorical split.  Also,
+            JSON serialization format is required.
 
         """
         if group is not None and qid is not None:
diff --git a/src/data/data.cc b/src/data/data.cc
index 23ccfae5060d..db57206f0c33 100644
--- a/src/data/data.cc
+++ b/src/data/data.cc
@@ -200,8 +200,6 @@ void LoadFeatureType(std::vector<std::string>const& type_names, std::vector<Feat
       types->emplace_back(FeatureType::kNumerical);
     } else if (elem == "q") {
       types->emplace_back(FeatureType::kNumerical);
-    } else if (elem == "categorical") {
-      types->emplace_back(FeatureType::kCategorical);
     } else if (elem == "c") {
       types->emplace_back(FeatureType::kCategorical);
     } else {