remove few more refs from tehc review

Author: lindseymoore

source/data-formats/decimal128.txt

@@ -15,11 +15,10 @@ Decimal128
 Overview
 --------
 
-MongoDB 3.4 introduced support for a Decimal128 BSON type,
-which is a 128-bit decimal-based
-floating-point value capable of emulating decimal rounding with exact precision.
-This functionality is intended for applications that handle :manual:`monetary
-data </tutorial/model-monetary-data>`, such as financial and tax computations.
+Decimal128 BSON type is a 128-bit decimal-based floating-point value capable 
+of emulating decimal rounding with exact precision. This functionality is 
+intended for applications that handle :manual:`monetary data </tutorial/model-monetary-data>`, 
+such as financial and tax computations.
 
 The :php:`MongoDB\BSON\Decimal128 <mongodb-bson-decimal128>` class may be used
 to work with this type in PHP.

source/reference/method/MongoDBDatabase-createCollection.txt

@@ -69,8 +69,7 @@ Parameters
             For replica sets, do not set ``autoIndexId`` to ``false``.
 
          .. deprecated:: 1.4
-            This option has been deprecated since MongoDB 3.2. As of MongoDB
-            4.0, this option cannot be ``false`` when creating a replicated
+            As of MongoDB 4.0, this option cannot be ``false`` when creating a replicated
             collection (i.e. a collection outside of the ``local`` database in
             any mongod mode).
 
@@ -148,11 +147,6 @@ Parameters
 
          Defaults to ``1``.
 
-         MongoDB 3.0 and later ignores the ``usePowerOf2Sizes`` flag. See
-         :manual:`collMod </reference/command/collMod>` and
-         :manual:`db.createCollection()
-         </reference/method/db.createCollection>` for more information.
-
      * - indexOptionDefaults
        - array|object
        - Allows users to specify a default configuration for indexes when

source/tutorial/collation.txt

@@ -17,8 +17,7 @@ Collation
 Overview
 --------
 
-MongoDB 3.4 introduced support for :manual:`collations
-</reference/collation/>`, which provide a set of rules to comply with the
+:manual:`Collations </reference/collation/>` provide a set of rules to comply with the
 conventions of a particular language when comparing strings.
 
 For example, in Canadian French, the last accent in a given word determines the