Revert "Break down file storage usage gauge by component" (#30163)

Reverts get-convex/convex#30077

GitOrigin-RevId: d31e5fea10a3bf4e68d81bfacb54ab5387103ab2

Author: emmaling27

crates/events/src/testing.rs

@@ -176,10 +176,7 @@ impl UsageCounterState {
             },
             UsageEvent::CurrentVectorStorage { tables: _ } => todo!(),
             UsageEvent::CurrentDatabaseStorage { tables: _ } => todo!(),
-            UsageEvent::CurrentFileStorage {
-                total_size: _,
-                by_component: _,
-            } => todo!(),
+            UsageEvent::CurrentFileStorage { total_size: _ } => todo!(),
             UsageEvent::CurrentDocumentCounts { tables: _ } => todo!(),
         }
     }

crates/events/src/usage.rs

@@ -1,5 +1,3 @@
-use std::collections::BTreeMap;
-
 use async_trait::async_trait;
 use serde::{
     Deserialize,
@@ -110,10 +108,7 @@ pub enum UsageEvent {
         tables: Vec<TableDatabaseStorage>,
     },
     CurrentFileStorage {
-        // TODO(ENG-7423): Clean up this old field once no databricks tables and queries rely on
-        // it. They should use the by_component field instead.
         total_size: u64,
-        by_component: BTreeMap<Option<String>, u64>,
     },
     CurrentDocumentCounts {
         tables: Vec<TableDocumentCount>,