azure-pipelines.yml: Removed x86 tests for .NET Core on Linux/macOS, as they are not supported
azure-pipelines.yml: Removed x86 tests for .NET Core on Linux/macOS, as they are not supported

NightOwl888/lucenenet,jeme/lucenenet,apache/lucenenet,NightOwl888/lucenenet,NightOwl888/lucenenet,apache/lucenenet,NightOwl888/lucenenet,jeme/lucenenet,jeme/lucenenet,jeme/lucenenet,apache/lucenenet,apache/lucenenet