Dead code / CAS / XBAP removals tracker for .NET 10

[h3xds1nz]

This issue serves for tracking dead code removals and clean up from CAS / XBAP that wasn't previously done. Issues either already made it (or hopefully will, for this effort to be worth it) make it into .NET 10:

• Remove FriendAccessAllowedAttribute usage #6561
• Remove SecurityCriticalDataForSet #7161
• Remove SafeReflectionInvoker Part 2 #7485
• Remove CriticalHandle properties #9292
• Remove unused CAS resource strings and its translations from all libraries #9698
• Improve startup and runtime performance by removing XamlTypeInvoker dead code #9736
• Remove obsolete TARGETTING35SP1 preprocessor directive and dead code within #9744
• Remove IsPresentationFrameworkVersionLessThan4 property and associated dead code #9749
• Remove dead code in FontSourceCollection/FontSource (+ hollow CAS remnants) #9838
• Remove XBAP-related dead code from BrowserInteropHelper/SafeSecurityHelper #9855
• Remove TimelineEnumerator/TimelineTreeEnumerator dead code #9858
• Remove GenericEnumerator dead code from PresentationCore #9862
• Remove AssemblyFilter dead code as APTCA is not supported #9863
• Remove XBAP-related dead code from Application/BrowserInteropHelper, finish cleanup #9865
• Remove SecurityCriticalData/Class #9882
• Remove OleCmdHelper/ISecureCommand dead code (CAS/XBAP leftovers) #9943
• Remove WLDP/UseLegacyDangerousClipboardDeserializationMode leftovers #9975 (passed tests)
• Remove GenericsInstances class from WindowsBase as it no longer needed #9990
• Remove IBrowserHostServices/INativeProgressPage and cleanup AppSecurityManager #10220
• Remove obsolete/dead code overloads and options from MimeObjectFactory #10227
• Remove EventPropertyMap dead code from PresentationCore #10236
• Remove interop dead code from PresentationFramework #10245
• Remove incompatible NETFX preprocessor conditionals from base libraries #10388
• Remove TreeBuilder and all the dead code associated from PBT #10635
• Remove dead code in BamlRecordReader associated with TreeBuilderBamlTranslator #10636
• Remove NetFX-specific dead code from DWriteForwarder compilation #10641
• Remove ShaperBuffers/OpenTypeLayoutCache and NetFX v3.X dead code #10664
• Remove WinRT ReflectionHelper dead code (compiled, not used) #10666
• Remove unused dead code in ElementUtil, make class static #10680
• Remove Critical/Unsecure property/method proxies and CAS-related code #10701
• Remove non-CLS exceptions handlers in LineServicesCallbacks (dead code) #10874
• Remove non-CLS exceptions handlers in PtsHost (dead code) #10875
• Remove non-CLS exceptions handlers and CS1058 suppressions (+ cleanup) #10876
• Remove unused dead code in BamlMapTable / XamlTypeMapper #10881

[h3xds1nz]

Added #10680

[h3xds1nz]

Added #10701

[h3xds1nz]

Adding: #10874 / #10875 / #10876