Remove material term reference field from Input logs.

docs/model/type/log.md

@@ -267,10 +267,6 @@ Input Logs have the following additional attributes:
 - Purchase date (timestamp)
 - Source (string)
 
-And the following additional relationships:
-
-- Material type (References Terms in the "Material types" vocabulary)
-
 #### Lab Test Logs
 
 Lab Test Logs have the following additional attributes:

modules/log/input/farm_input.info.yml

@@ -5,5 +5,4 @@ package: farmOS Logs
 core_version_requirement: ^9
 dependencies:
   - farm:farm_entity
-  - farm:farm_material_type
   - farm:farm_quantity_material

modules/log/input/src/Plugin/Log/LogType/Input.php

@@ -32,22 +32,6 @@ class Input extends FarmLogType {
     ];
     $fields['lot_number'] = $this->farmFieldFactory->bundleFieldDefinition($options);
 
-    // Material type.
-    $options = [
-      'type' => 'entity_reference',
-      'label' => $this->t('Material type'),
-      'description' => $this->t('What type of materials are being applied?'),
-      'target_type' => 'taxonomy_term',
-      'target_bundle' => 'material_type',
-      'auto_create' => TRUE,
-      'multiple' => TRUE,
-      'weight' => [
-        'form' => -50,
-        'view' => -50,
-      ],
-    ];
-    $fields['material_type'] = $this->farmFieldFactory->bundleFieldDefinition($options);
-
     // Method.
     $options = [
       'type' => 'string',