Removed legacy QtUi/ClickableLabel and re-worked about dialog to use QLabel for terms of use label

Signed-off-by: Chris Galvan <chgalvan@amazon.com>

Code/Editor/AboutDialog.cpp

@@ -30,8 +30,6 @@ CAboutDialog::CAboutDialog(QString versionText, QString richTextCopyrightNotice,
     m_ui->setupUi(this);
     setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
 
-    connect(m_ui->m_transparentAgreement, &QLabel::linkActivated, this, &CAboutDialog::OnCustomerAgreement);
-
     m_ui->m_transparentTrademarks->setText(versionText);
 
     m_ui->m_transparentAllRightReserved->setObjectName("copyrightNotice");
@@ -84,9 +82,4 @@ void CAboutDialog::mouseReleaseEvent(QMouseEvent* event)
     QDialog::mouseReleaseEvent(event);
 }
 
-void CAboutDialog::OnCustomerAgreement()
-{
-    QDesktopServices::openUrl(QUrl(QStringLiteral("https://www.o3debinaries.org/license")));
-}
-
 #include <moc_AboutDialog.cpp>