Clean dependencies

[beto-rodriguez]

No description provided.

[Copilot]

Pull Request Overview

This pull request simplifies the target framework configuration by removing platform-specific targets and OS version constraints. The changes streamline the project files to support only core .NET frameworks without mobile or Windows-specific platforms.

Key Changes

• Removed mobile platform targets (Android, iOS, macCatalyst) and Windows-specific targets
• Eliminated all SupportedOSPlatformVersion and TargetPlatformMinVersion configurations
• Simplified TargetFrameworks to include only net462, netstandard2.0, netstandard2.1, and net8.0

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/skiasharp/LiveChartsCore.SkiaSharp/LiveChartsCore.SkiaSharpView.csproj	Simplified target frameworks and removed platform-specific configurations
src/LiveChartsCore/LiveChartsCore.csproj	Simplified target frameworks and removed platform-specific configurations

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