Simplify a bit.

dotnet/targets/Xamarin.Shared.Sdk.targets

@@ -452,8 +452,8 @@
 			<!-- TrimMode specifies what the linker will do with framework assemblies -->
 			<TrimMode Condition="'$(_LinkMode)' == 'TrimMode'">$(TrimMode)</TrimMode>
 			<TrimMode Condition="'$(_LinkMode)' == 'None'">copy</TrimMode> <!-- Don't use 'copyused', because that might still end up saving some assemblies, and if that's the platform assembly, it may break the partial static registrar -->
-			<TrimMode Condition="'$(_LinkMode)' == 'SdkOnly' Or '$(_LinkMode)' == 'Full'">link</TrimMode>
-			<!-- For Full link mode we also need to set TrimMode for all non-framework assemblies. This is done further below -->
+			<TrimMode Condition="'$(_LinkMode)' == 'SdkOnly'">partial</TrimMode>
+			<TrimMode Condition="'$(_LinkMode)' == 'Full'">full</TrimMode>
 
 			<!-- Determine if any assemblies are actually trimmed, or if we're in a "Don't link" scenario -->
 			<!-- We're in a "Don't link" scenario if both of the following are true:
@@ -511,10 +511,6 @@
 				XamarinNativeLibraryDirectory=$(_XamarinNativeLibraryDirectory)
 				XamarinRuntime=$(_XamarinRuntime)
 			</_CustomLinkerOptions>
-			<!-- TrimMode specifies what the linker will do with framework assemblies -->
-			<TrimMode Condition="'$(_LinkMode)' == 'None'">copy</TrimMode> <!-- Don't use 'copyused', because that might still end up saving some assemblies, and if that's the platform assembly, it may break the partial static registrar -->
-			<TrimMode Condition="'$(_LinkMode)' == 'SdkOnly'">partial</TrimMode>
-			<TrimMode Condition="'$(_LinkMode)' == 'Full'">full</TrimMode>
 			<_ExtraTrimmerArgs>$(_ExtraTrimmerArgs) --custom-data "LinkerOptionsFile=$(_CustomLinkerOptionsFile)"</_ExtraTrimmerArgs>
 			<_ExtraTrimmerArgs Condition="'$(TrimMode)' == 'copy' And '$(MarkCopiedAssemblies)' != 'true'">$(_ExtraTrimmerArgs) --custom-data DisableMarkingOfCopyAssemblies=true</_ExtraTrimmerArgs>