Remove extra/bad profile markers (#4031)

Many of these are just extra noise in the profile, but the one in Archive.cpp could also cause PIX to crash.

Signed-off-by: Mike Balfour <82224783+mbalfour-amzn@users.noreply.github.com>

Gems/Atom/RPI/Code/Source/RPI.Reflect/Shader/ShaderAsset.cpp

@@ -172,8 +172,6 @@ namespace AZ
         Data::Asset<ShaderVariantAsset> ShaderAsset::GetVariant(
             const ShaderVariantId& shaderVariantId, SupervariantIndex supervariantIndex)
         {
-            AZ_PROFILE_FUNCTION(RPI);
-
             auto variantFinder = AZ::Interface<IShaderVariantFinder>::Get();
             AZ_Assert(variantFinder, "The IShaderVariantFinder doesn't exist");
 
@@ -189,8 +187,6 @@ namespace AZ
 
         ShaderVariantSearchResult ShaderAsset::FindVariantStableId(const ShaderVariantId& shaderVariantId)
         {
-            AZ_PROFILE_FUNCTION(RPI);
-
             uint32_t dynamicOptionCount = aznumeric_cast<uint32_t>(GetShaderOptionGroupLayout()->GetShaderOptions().size());
             ShaderVariantSearchResult variantSearchResult{RootShaderVariantStableId,  dynamicOptionCount };