Get rid of Oam sink

doesn't give us what we really want. While logs appear in the Monitoring CloudWatch account they are not handled by the account's CW logs global subscription filter

template.yaml

@@ -3,11 +3,13 @@ Transform: AWS::Serverless-2016-10-31
 Description: AWS account observability stack
 
 Parameters:
+  AwsOrgId:
+    Type: String
+  AwsOrgRootId:
+    Type: String
   TargetRegions:
     Type: String
     Description: List of OUs
-  AwsOrgId:
-    Type: String
   ObservabilityOu:
     Type: String
     Description: OU of observability accounts
@@ -16,10 +18,6 @@ Parameters:
   DatadogApiKey:
     Type: String
     NoEcho: 'true'
-  AwsOamSinkArn:
-    Type: String
-  AwsOrgRootId:
-    Type: String
 
 Resources:
 
@@ -32,30 +30,3 @@ Resources:
         TargetRegions: !Ref TargetRegions
         DatadogHttpEndpointUrl: !Ref DatadogHttpEndpointUrl
         DatadogApiKey: !Ref DatadogApiKey
-
-  OamSinkStackSet:
-    Type: AWS::Serverless::Application
-    Properties:
-      Location: "./stacksets/cloudwatch-oam-sink/stackset.yaml"
-      Parameters:
-        ObservabilityOu: !Ref ObservabilityOu
-        TargetRegions: !Ref TargetRegions
-        AwsOrgId: !Ref AwsOrgId
-
-  OamLinkStackSet:
-    Type: AWS::Serverless::Application
-    DependsOn: OamSinkStackSet
-    Properties:
-      Location: "./stacksets/cloudwatch-oam-link/stackset.yaml"
-      Parameters:
-        AwsOrgRootId: !Ref AwsOrgRootId
-        TargetRegions: !Ref TargetRegions
-        AwsOamSinkArn: !Ref AwsOamSinkArn
-
-  OamLinkManagementStack:
-    Type: AWS::Serverless::Application
-    DependsOn: OamSinkStackSet
-    Properties:
-      Location: "./stacksets/cloudwatch-oam-link/template.yaml"
-      Parameters:
-        AwsOamSinkArn: !Ref AwsOamSinkArn