Remove unused RULE_INTERNAL_ALLOW_UPDATE

src/Composer/DependencyResolver/Rule.php

@@ -28,7 +28,6 @@ use Composer\Semver\Constraint\Constraint;
 abstract class Rule
 {
     // reason constants
-    const RULE_INTERNAL_ALLOW_UPDATE = 1;
     const RULE_ROOT_REQUIRE = 2;
     const RULE_FIXED = 3;
     const RULE_PACKAGE_CONFLICT = 6;
@@ -180,9 +179,6 @@ abstract class Rule
         }
 
         switch ($this->getReason()) {
-            case self::RULE_INTERNAL_ALLOW_UPDATE:
-                return $ruleText;
-
             case self::RULE_ROOT_REQUIRE:
                 $packageName = $this->reasonData['packageName'];
                 $constraint = $this->reasonData['constraint'];

tests/Composer/Test/DependencyResolver/RuleSetIteratorTest.php

@@ -35,7 +35,7 @@ class RuleSetIteratorTest extends TestCase
                 new GenericRule(array(), Rule::RULE_ROOT_REQUIRE, null),
             ),
             RuleSet::TYPE_LEARNED => array(
-                new GenericRule(array(), Rule::RULE_INTERNAL_ALLOW_UPDATE, null),
+                new GenericRule(array(), Rule::RULE_FIXED, null),
             ),
             RuleSet::TYPE_PACKAGE => array(),
         );

tests/Composer/Test/DependencyResolver/RuleSetTest.php

@@ -31,7 +31,7 @@ class RuleSetTest extends TestCase
                 new GenericRule(array(2), Rule::RULE_ROOT_REQUIRE, null),
             ),
             RuleSet::TYPE_LEARNED => array(
-                new GenericRule(array(), Rule::RULE_INTERNAL_ALLOW_UPDATE, null),
+                new GenericRule(array(), Rule::RULE_FIXED, null),
             ),
         );