DOC-1121 Remove snapshot_memory_safety_factor in postgres_cdc connector (#198)

Author: asimms41

modules/components/pages/inputs/postgres_cdc.adoc

@@ -20,8 +20,7 @@ input:
     dsn: postgres://foouser:foopass@localhost:5432/foodb?sslmode=disable # No default (required)
     include_transaction_markers: true
     stream_snapshot: false
-    snapshot_memory_safety_factor: 1
-    snapshot_batch_size: 0
+    snapshot_batch_size: 1000
     schema: public # No default (required)
     tables: [] # No default (required)
     checkpoint_limit: 1024
@@ -245,32 +244,15 @@ When set to `true`, this input streams a snapshot of all existing data in the so
 stream_snapshot: true
 ```
 
-=== `snapshot_memory_safety_factor`
-
-The fraction of available memory to use for streaming the database snapshot. Decimal values between `0` and `1` represent the percentage of memory to use. For example, `0.3` would allocate 30% of the available memory. Lower values make initial streaming slower, but help prevent out-of-memory errors.
-
-This option is only available when `stream_snapshot` is set to `true`. You can use either `snapshot_memory_safety_factor` or `snapshot_batch_size`, not both. 
-
-
-*Type*: `float`
-
-*Default*: `1`
-
-```yml
-# Examples
-
-snapshot_memory_safety_factor: 0.2
-```
-
 === `snapshot_batch_size`
 
-The number of table rows to fetch in each batch when querying the snapshot. Leave at `0` to allow the input to determine the batch size based on the `snapshot_memory_safety_factor` value.
+The number of table rows to fetch in each batch when querying the snapshot.
 
-This option is only available when `stream_snapshot` is set to `true`. You can use either `snapshot_batch_size` or `snapshot_memory_safety_factor`, not both. 
+This option is only available when `stream_snapshot` is set to `true`.
 
 *Type*: `int`
 
-*Default*: `0`
+*Default*: `1000`
 
 ```yml
 # Examples