Remove redundant notebooks top-level folder (#263)

Author: nfx

notebooks/common.py

@@ -1,4 +1,4 @@
 -- viz type=counter, name=Total Database Count, counter_label=Total Databases, value_column=count_total_databases
 -- widget col=0, row=0, size_x=1, size_y=3
 SELECT COUNT(DISTINCT `database`) AS count_total_databases
-FROM hive_metastore.ucx.tables
+FROM $inventory.tables

notebooks/toolkit.py

@@ -2,4 +2,4 @@
 -- widget title=Mount Points, col=3, row=17, size_x=3, size_y=8
 SELECT name,
        source
-FROM hive_metastore.ucx.mounts
+FROM $inventory.mounts

src/databricks/labs/ucx/assessment/queries/count_total_databases.sql

@@ -118,8 +118,9 @@ def create(
             ddl = f"{ddl} USING json LOCATION '{location}'"
         elif external:
             # external table
-            location = "dbfs:/databricks-datasets/nyctaxi-with-zipcodes/subsampled"
-            ddl = f"{ddl} USING delta LOCATION '{location}'"
+            url = "s3a://databricks-datasets-oregon/delta-sharing/share/open-datasets.share"
+            share = f"{url}#delta_sharing.default.lending_club"
+            ddl = f"{ddl} USING deltaSharing LOCATION '{share}'"
         else:
             # managed table
             ddl = f"{ddl} (id INT, value STRING)"