plugins/shakecursor: Ignore animation speed

From the user perspective, shaking cursor is not perceived as an
animation, so let's ignore the global animation speed factor.

BUG: 488813

src/plugins/shakecursor/shakecursor.cpp

@@ -13,8 +13,6 @@
 #include "scene/cursoritem.h"
 #include "scene/workspacescene.h"
 
-using namespace std::chrono_literals;
-
 namespace KWin
 {
 
@@ -84,7 +82,7 @@ void ShakeCursorEffect::animateTo(qreal magnification)
 
         m_scaleAnimation.setStartValue(m_currentMagnification);
         m_scaleAnimation.setEndValue(magnification);
-        m_scaleAnimation.setDuration(animationTime(200ms));
+        m_scaleAnimation.setDuration(200); // ignore animation speed, it's not an animation from user perspective
         m_scaleAnimation.setEasingCurve(QEasingCurve::InOutCubic);
         m_scaleAnimation.start();
 
@@ -105,7 +103,7 @@ void ShakeCursorEffect::pointerEvent(MouseEvent *event)
 
     if (m_shakeDetector.update(event)) {
         inflate();
-        m_deflateTimer.start(animationTime(2000ms));
+        m_deflateTimer.start(2000);
     }
 }