C++: Fix query metadata warnings.

cpp/ql/src/Metrics/Dependencies/ExternalDependencies.ql

@@ -5,7 +5,6 @@
  * @kind treemap
  * @treemap.warnOn highValues
  * @metricType externalDependency
- * @precision medium
  * @id cpp/external-dependencies
  * @tags modularity
  */

cpp/ql/src/Metrics/Files/FLinesOfCode.ql

@@ -7,7 +7,6 @@
  * @treemap.warnOn highValues
  * @metricType file
  * @metricAggregate avg sum max
- * @precision very-high
  * @id cpp/lines-of-code-in-files
  * @tags maintainability
  *       complexity

cpp/ql/src/Metrics/Files/FLinesOfCommentedOutCode.ql

@@ -5,7 +5,6 @@
  * @treemap.warnOn highValues
  * @metricType file
  * @metricAggregate avg sum max
- * @precision high
  * @id cpp/lines-of-commented-out-code-in-files
  * @tags documentation
  */

cpp/ql/src/Metrics/Files/FLinesOfComments.ql

@@ -7,7 +7,6 @@
  * @treemap.warnOn lowValues
  * @metricType file
  * @metricAggregate avg sum max
- * @precision very-high
  * @id cpp/lines-of-comments-in-files
  * @tags maintainability
  *       documentation

cpp/ql/src/Metrics/Files/FLinesOfDuplicatedCode.ql

@@ -8,7 +8,6 @@
  * @treemap.warnOn highValues
  * @metricType file
  * @metricAggregate avg sum max
- * @precision high
  * @id cpp/duplicated-lines-in-files
  * @tags testability
  *       modularity

cpp/ql/src/Metrics/Files/FNumberOfTests.ql

@@ -5,7 +5,6 @@
  * @treemap.warnOn lowValues
  * @metricType file
  * @metricAggregate avg sum max
- * @precision medium
  * @id cpp/tests-in-files
  * @tags maintainability
  */

cpp/ql/src/external/tests/DefectFromExternalData.ql

@@ -1,5 +1,6 @@
 /**
  * @name Defect from external data
+ * @id cpp/external/tests/defects-from-external-data
  * @description Insert description here...
  * @kind problem
  * @problem.severity warning

cpp/ql/src/filters/FilterAutogenerated.ql

@@ -3,6 +3,7 @@
  * @description Use this filter to return results only if they are
  *              located in files that are maintained manually.
  * @kind problem
+ * @problem.severity recommendation
  * @id cpp/autogenerated-filter
  * @tags filter
  */

cpp/ql/src/filters/FromSource.ql

@@ -4,6 +4,7 @@
  * @description Use this filter to return results only if they are
  *              located in files for which we have source code.
  * @kind problem
+ * @problem.severity recommendation
  * @id cpp/from-source-filter
  * @tags filter
  */

cpp/ql/src/filters/Macros.ql

@@ -4,6 +4,7 @@
  *              macro expansion whose location spans all the lines of
  *              the result's location.
  * @kind problem
+ * @problem.severity recommendation
  * @id cpp/macros-filter
  * @tags filter
  */