Remove support for Google Spanner database. (#105846)

* Remove support for Google Spanner database.

go.work.sum

@@ -442,6 +442,7 @@ cloud.google.com/go/shell v1.8.1/go.mod h1:jaU7OHeldDhTwgs3+clM0KYEDYnBAPevUI6wN
 cloud.google.com/go/shell v1.8.3 h1:mjYgUsOtV3jl9xvDmcvlRRmA64deEPf52zOfuc68b/g=
 cloud.google.com/go/shell v1.8.3/go.mod h1:OYcrgWF6JSp/uk76sNTtYFlMD0ho2+Cdzc7U3P/bF54=
 cloud.google.com/go/spanner v1.70.0/go.mod h1:X5T0XftydYp0K1adeJQDJtdWpbrOeJ7wHecM4tK6FiE=
+cloud.google.com/go/spanner v1.73.0 h1:0bab8QDn6MNj9lNK6XyGAVFhMlhMU2waePPa6GZNoi8=
 cloud.google.com/go/spanner v1.73.0/go.mod h1:mw98ua5ggQXVWwp83yjwggqEmW9t8rjs9Po1ohcUGW4=
 cloud.google.com/go/speech v1.25.1 h1:iGZJS3wrdkje/Vqiacx1+r+zVwUZoXVMdklYIVsvfNw=
 cloud.google.com/go/speech v1.25.1/go.mod h1:WgQghvghkZ1htG6BhYn98mP7Tg0mti8dBFDLMVXH/vM=
@@ -1047,8 +1048,6 @@ github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg78
 github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572/go.mod h1:9Pwr4B2jHnOSGXyyzV8ROjYa2ojvAY6HCGYYfMoC3Ls=
 github.com/go-viper/mapstructure/v2 v2.0.0-alpha.1 h1:TQcrn6Wq+sKGkpyPvppOz99zsMBaUOKXq6HSv655U1c=
 github.com/go-viper/mapstructure/v2 v2.0.0-alpha.1/go.mod h1:oJDH3BJKyqBA2TXFhDsKDGDTlndYOZ6rGS0BRZIxGhM=
-github.com/go-viper/mapstructure/v2 v2.2.1 h1:ZAaOCxANMuZx5RCeg0mBdEZk7DZasvvZIxtHqx8aGss=
-github.com/go-viper/mapstructure/v2 v2.2.1/go.mod h1:oJDH3BJKyqBA2TXFhDsKDGDTlndYOZ6rGS0BRZIxGhM=
 github.com/go-zookeeper/zk v1.0.2/go.mod h1:nOB03cncLtlp4t+UAkGSV+9beXP/akpekBwL+UX1Qcw=
 github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU=
 github.com/gobwas/httphead v0.1.0/go.mod h1:O/RXo79gxV8G+RqlR/otEwx4Q36zl9rqC5u12GKvMCM=