Rename framework coverage query

Move it to the other summary queries, update all references.

java/ql/src/Diagnostics/CoverageDiagnostics.ql

@@ -1,18 +0,0 @@
-/**
- * @name Diagnostics for framework coverage
- * @description Expose diagnostics for the number of API endpoints covered by CSV models.
- * @kind metric
- * @tags summary
- * @id java/diagnostics/framework-coverage
- */
-
-import java
-import semmle.code.java.dataflow.ExternalFlow
-
-from string packageAndType, int rows
-where
-  exists(string package, string type |
-    packageAndType = package + ";" + type and
-    rows = strictsum(int n, string kind | modelCoverage(package, _, kind, type, n) | n)
-  )
-select packageAndType, rows