docs: remove JSON from documentation (#11479)

global JSON object is a part of ECMA-262 standart (5.1 edition)
https://www.ecma-international.org/ecma-262/5.1/#sec-15.12

Co-authored-by: Jan Vennemann <jan.vennemann@gmx.net>

apidoc/Global/Global.yml

@@ -4,10 +4,6 @@ summary: The APIs that reside in the global scope, which may be called without a
 description: |
     Titanium provides a number of global built-in objects, detailed below.
 
-    #### JSON
-
-    Titanium provides a built-in [JSON](Global.JSON) object two functions, `parse` and `stringify`.
-
     #### String Utilities
 
     Titanium includes several extra utility functions for formatting text, attached to the
@@ -293,10 +289,3 @@ properties:
     summary: Console logging facilities.
     type: Console
     accessors: false
-
-  - name: JSON
-    summary: |
-        An intrinsic object that provides functions to convert JavaScript values to and from
-        the JavaScript Object Notation (JSON) format.
-    type: JSON
-    accessors: false

apidoc/Titanium/Titanium.yml

@@ -28,7 +28,7 @@ description: |
     #### Global APIs
 
     Titanium includes a number of built-in JavaScript objects that are not part of the Titanium
-    namespace, including JSON parsing, String formatting, timers, and the CommonJS `require` function.
+    namespace, including String formatting, timers, and the CommonJS `require` function.
     See [Global APIs](Global) for details.
 
 since: "0.1"