Remove unused @update_cache class variables

It was meant for the check command, in order to to not fetch remote
repositories, but the command was refactored and it's been left
unused (since 0938075).

Author: ysbaddaden

src/manager.cr

@@ -6,8 +6,8 @@ module Shards
     getter packages : Set
     property locks : Array(Dependency)?
 
-    def initialize(@spec, update_cache = true)
-      @packages = Set.new(update_cache: update_cache)
+    def initialize(@spec)
+      @packages = Set.new
     end
 
     def resolve

src/package.cr

@@ -8,7 +8,7 @@ module Shards
     @resolver : Resolver?
     @available_versions : Array(String)?
 
-    def initialize(@dependency : Dependency, @update_cache = false)
+    def initialize(@dependency : Dependency)
       @requirements = [] of String
     end
 
@@ -120,7 +120,7 @@ module Shards
     end
 
     def resolver
-      @resolver ||= Shards.find_resolver(@dependency, update_cache: @update_cache)
+      @resolver ||= Shards.find_resolver(@dependency)
     end
 
     private def available_versions
@@ -129,15 +129,11 @@ module Shards
   end
 
   class Set < Array(Package)
-    def initialize(@update_cache = true)
-      super()
-    end
-
     def add(dependency)
       package = find { |package| package.name == dependency.name }
 
       unless package
-        package = Package.new(dependency, update_cache: @update_cache)
+        package = Package.new(dependency)
         self << package
       end
 

src/resolvers/git.cr

@@ -172,7 +172,7 @@ module Shards
         @updated_cache = false
       end
 
-      return if !@update_cache || @updated_cache
+      return if @updated_cache
       Shards.logger.info "Fetching #{git_url}"
 
       if cloned_repository?

src/resolvers/resolver.cr

@@ -8,7 +8,7 @@ module Shards
   abstract class Resolver
     getter dependency : Dependency
 
-    def initialize(@dependency, @update_cache = true)
+    def initialize(@dependency)
     end
 
     def spec(version = nil)
@@ -57,11 +57,11 @@ module Shards
     @@resolver_classes[resolver.key] = resolver
   end
 
-  def self.find_resolver(dependency, update_cache = true)
+  def self.find_resolver(dependency)
     @@resolvers[dependency.name] ||= begin
       klass = get_resolver_class(dependency.keys)
       raise Error.new("Failed can't resolve dependency #{dependency.name} (unsupported resolver)") unless klass
-      klass.new(dependency, update_cache: update_cache)
+      klass.new(dependency)
     end
   end