Drop documentation build

We will add additional libraries back to the qt5.git. Having
documentation build enabled in additional library will cause problems
in qt5.git integrations so we need to drop it from module builds.

At same time drop the qttools dependency which were added for
documentation build

Task-number: QTBUG-91796
Change-Id: Idcb782ceffb757389255024ae5ef5a668d980ffa
Reviewed-by: Toni Saario <toni.saario@qt.io>
(cherry picked from commit 1d98b0c39a)
Reviewed-by: Akseli Salovaara <akseli.salovaara@qt.io>

coin/module_config.yaml

@@ -6,9 +6,6 @@ accept_configuration:
 
 instructions:
   Build:
-    - type: EnvironmentVariable
-      variableName: BUILD_DOCUMENTATION
-      variableValue: "1"
     - !include "{{qt/qtbase}}/coin_module_build_template_v2.yaml"
 
   Test:

dependencies.yaml

@@ -5,6 +5,3 @@ dependencies:
   ../qtdeclarative:
     ref: 8eac25aeba4e27f6bcf16cec4bb91073b0ea3054
     required: true
-  ../qttools:
-    ref: d12847bb3d7fd147a1c44396b5b4ca7cbd53d86b
-    required: true