Remove AWS Active Tracing span linking

This aligns with the latest spec change:
open-telemetry/semantic-conventions#354

Providing the Lambda span's parent context should continue to be the responsibility of the global propagator.

instrumentation/aws-lambda/aws-lambda-core-1.0/library/build.gradle.kts

@@ -11,8 +11,6 @@ dependencies {
 
   library("com.amazonaws:aws-lambda-java-core:1.0.0")
 
-  implementation("io.opentelemetry.contrib:opentelemetry-aws-xray-propagator")
-
   // We do lightweight parsing of JSON to extract HTTP headers from requests for propagation.
   // This will be commonly needed even for users that don't use events, but luckily it's not too big.
   // Note that Lambda itself uses Jackson, but does not expose it to the function so we need to include

instrumentation/aws-lambda/aws-lambda-core-1.0/library/src/main/java/io/opentelemetry/instrumentation/awslambdacore/v1_0/internal/AwsLambdaFunctionInstrumenterFactory.java

@@ -23,7 +23,6 @@ public static AwsLambdaFunctionInstrumenter createInstrumenter(OpenTelemetry ope
                 openTelemetry,
                 "io.opentelemetry.aws-lambda-core-1.0",
                 AwsLambdaFunctionInstrumenterFactory::spanName)
-            .addSpanLinksExtractor(new AwsXrayEnvSpanLinksExtractor())
             .addAttributesExtractor(new AwsLambdaFunctionAttributesExtractor())
             .buildInstrumenter(SpanKindExtractor.alwaysServer()));
   }