LibWeb: Remove unused CSSPixels::epsilon()

Author: https://github.com/kalenikaliaksandr
Commit: 2bd7d1426b
Pull-request: https://github.com/SerenityOS/serenity/pull/20368

Userland/Libraries/LibWeb/PixelUnits.cpp

@@ -161,9 +161,4 @@ CSSPixels CSSPixels::abs() const
     return result;
 }
 
-float CSSPixels::epsilon()
-{
-    return 1.0f / fixed_point_denominator;
-}
-
 }

Userland/Libraries/LibWeb/PixelUnits.h

@@ -92,8 +92,6 @@ public:
 
     CSSPixels abs() const;
 
-    static float epsilon();
-
 private:
     i32 m_value { 0 };
 };