Misc: Remove some unneeded includes of Timer.h and ElapsedTimer.h (#3286)

Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/8b166e57dfb
Pull-request: https://github.com/SerenityOS/serenity/pull/3286

Demos/WidgetGallery/main.cpp

@@ -27,7 +27,6 @@
 
 #include <AK/NonnullRefPtr.h>
 #include <AK/Vector.h>
-#include <LibCore/Timer.h>
 #include <LibGUI/AboutDialog.h>
 #include <LibGUI/Action.h>
 #include <LibGUI/Application.h>

Libraries/LibTLS/Exchange.cpp

@@ -24,7 +24,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <LibCore/Timer.h>
 #include <LibCrypto/ASN1/DER.h>
 #include <LibCrypto/PK/Code/EMSA_PSS.h>
 #include <LibTLS/TLSv12.h>

Libraries/LibTLS/Handshake.cpp

@@ -25,7 +25,6 @@
  */
 
 #include <AK/Random.h>
-#include <LibCore/Timer.h>
 #include <LibCrypto/ASN1/DER.h>
 #include <LibCrypto/PK/Code/EMSA_PSS.h>
 #include <LibTLS/TLSv12.h>

Libraries/LibWeb/HTML/HTMLIFrameElement.cpp

@@ -24,7 +24,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <LibCore/ElapsedTimer.h>
 #include <LibGUI/Button.h>
 #include <LibGUI/TextBox.h>
 #include <LibWeb/DOM/Document.h>

Libraries/LibWeb/HTML/HTMLImageElement.cpp

@@ -24,7 +24,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <LibCore/Timer.h>
 #include <LibGfx/Bitmap.h>
 #include <LibGfx/ImageDecoder.h>
 #include <LibWeb/CSS/Parser/CSSParser.h>

Libraries/LibWeb/HTML/HTMLInputElement.cpp

@@ -24,7 +24,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <LibCore/ElapsedTimer.h>
 #include <LibGUI/Button.h>
 #include <LibGUI/TextBox.h>
 #include <LibWeb/DOM/Document.h>

Shell/Shell.cpp

@@ -32,7 +32,6 @@
 #include <AK/StringBuilder.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/DirIterator.h>
-#include <LibCore/ElapsedTimer.h>
 #include <LibCore/Event.h>
 #include <LibCore/EventLoop.h>
 #include <LibCore/File.h>