[SPEC-1856] Convert AWSGameLiftServerSDK to new 3rdparty system (#198)

Remove old 3rdparty reference in code, and replace with new target.
Lib has been promoted to prod bucket (https://jira.agscollab.com/browse/SPEC-6469)

scripts/build/package/Platform/3rdParty/package_filelists/3rdParty.json

@@ -2,7 +2,6 @@
     "@3rdParty": {
         "3rdParty.txt": "#include",
         "AWS/AWSNativeSDK/1.7.167-az.2/**": "#include",
-        "AWS/GameLift/3.4.0/**": "#include",
         "CMake/3.19.1/**": "#include",
         "DirectXShaderCompiler/1.0.1-az.1/**": "#include",
         "DirectXShaderCompiler/2020.08.07/**": "#include",

scripts/build/package/Platform/Windows/package_filelists/3rdParty.json

@@ -17,12 +17,6 @@
             "bin/linux/**":"#include",
             "lib/linux/**":"#include"
         },
-        "AWS/GameLift/3.4.0":{
-            "*":"#include",
-            "include/**":"#include",
-            "bin/windows/**":"#include",
-            "lib/linux/libstdcxx/**":"#include"
-        },
         "DirectXShaderCompiler/1.0.1-az.1":{
             "*":"#include",
             "src/**":"#include",