rmv RETL from warehouse yml file

Author: forstisabella

src/_data/catalog/warehouse.yml

@@ -53,7 +53,6 @@ items:
     url: 'https://cdn.filepicker.io/api/file/EUJvt69Q7qMqCvGrVtiu'
   categories:
     - Warehouses
-    - RETL
 - display_name: BigQuery
   slug: bigquery
   name: catalog/warehouses/bigquery
@@ -72,7 +71,6 @@ items:
     url: 'https://cdn.filepicker.io/api/file/Vk6iFlMvQeynbg30ZEtt'
   categories:
     - Warehouses
-    - RETL
 - display_name: Databricks 
   slug: databricks
   name: catalog/warehouses/databricks
@@ -91,7 +89,6 @@ items:
     url: ''
   categories: 
     - Warehouses
-    - RETL
 - display_name: Google Cloud Storage
   slug: google-cloud-storage
   name: catalog/warehouses/google-cloud-storage
@@ -146,7 +143,6 @@ items:
     url: ''
   categories:
     - Warehouses
-    - RETL
 - display_name: Redshift
   slug: redshift
   name: catalog/warehouses/redshift
@@ -165,7 +161,6 @@ items:
     url: ''
   categories:
     - Warehouses
-    - RETL
 - display_name: Segment Data Lakes
   slug: data-lakes
   name: catalog/warehouse/data-lakes
@@ -202,7 +197,6 @@ items:
     url: 'https://cdn.filepicker.io/api/file/OBhrGoCRKaSyvAhDX3fw'
   categories:
     - Warehouses
-    - RETL
 
   settings:
   - name: bucket