deleting memory-swap option from docker-compose files as PR not merged

https://github.com/moby/moby/pull/37872
this means, our containers will run out of memory anyway, as they are 
allowed to swap indefinitely and we have swap memory allowed on the 
machines

docker-compose.dem.ops.yml

@@ -42,7 +42,6 @@ services:
       resources:
         limits:
           memory: 8G
-          memory-swap: 8G
     networks:
       - extnet
   cache:
@@ -82,7 +81,6 @@ services:
       resources:
         limits:
           memory: 8G
-          memory-swap: 8G
     networks:
       - extnet
   registrar:

docker-compose.emg.ops.yml

@@ -42,7 +42,6 @@ services:
       resources:
         limits:
           memory: 8G
-          memory-swap: 8G
     networks:
       - extnet
   cache:
@@ -82,7 +81,6 @@ services:
       resources:
         limits:
           memory: 8G
-          memory-swap: 8G
     networks:
       - extnet
   registrar:

docker-compose.vhr18.ops.yml

@@ -42,7 +42,6 @@ services:
       resources:
         limits:
           memory: 8G
-          memory-swap: 8G
     networks:
       - extnet
   cache:
@@ -81,7 +80,6 @@ services:
       resources:
         limits:
           memory: 8G
-          memory-swap: 8G
       replicas: 3
     networks:
       - extnet