Get rid of Apache Client 3 provider, close AsyncHttpClient#719

Author: Stephane Landelle

pom.xml

@@ -191,26 +191,6 @@
             <version>1.2.2</version>
             <scope>test</scope>
         </dependency>
-
-        <!-- Optional Apache Http Client -->
-        <dependency>
-            <groupId>commons-httpclient</groupId>
-            <artifactId>commons-httpclient</artifactId>
-            <version>3.1</version>
-            <optional>true</optional>
-        </dependency>
-        <dependency>
-            <groupId>commons-lang</groupId>
-            <artifactId>commons-lang</artifactId>
-            <version>2.4</version>
-            <optional>true</optional>
-        </dependency>
-        <dependency>
-            <groupId>commons-logging</groupId>
-            <artifactId>commons-logging</artifactId>
-            <version>1.1.1</version>
-            <optional>true</optional>
-        </dependency>
     </dependencies>
     <build>
         <extensions>