Tests: Remove empty CMakePresets *.cmake files

When adding a presets test case, the per-case `.cmake` files are
sometimes not necessary to exercise the test logic. Relax the inclusion
of such files and remove all empty placeholders.

Note that some non-empty `CMakePresets/Trace-*.cmake` files are also
removed; they only include other empty files, and nothing in the test
case assertions (trace outputs / stderr) exercises the include
statements themselves.

Tests/RunCMake/CMakePresets/CMakeLists.txt.in

@@ -1,4 +1,4 @@
 cmake_minimum_required(VERSION 3.18)
 project(${RunCMake_TEST} NONE)
 set(RunCMake_SOURCE_DIR [==[@RunCMake_SOURCE_DIR@]==])
-include("${RunCMake_SOURCE_DIR}/${RunCMake_TEST}.cmake")
+include("${RunCMake_SOURCE_DIR}/${RunCMake_TEST}.cmake" OPTIONAL)

Tests/RunCMake/CMakePresets/TraceAll.cmake

@@ -1,4 +0,0 @@
-include(${CMAKE_CURRENT_LIST_DIR}/TraceExpand.cmake)
-include(${CMAKE_CURRENT_LIST_DIR}/TraceFormatJSON.cmake)
-include(${CMAKE_CURRENT_LIST_DIR}/TraceSource.cmake)
-include(${CMAKE_CURRENT_LIST_DIR}/TraceRedirect.cmake)

Tests/RunCMake/CMakePresets/TraceFormatInherit.cmake

@@ -1 +0,0 @@
-include(${CMAKE_CURRENT_LIST_DIR}/TraceFormatJSON.cmake)

Tests/RunCMake/CMakePresets/TraceInherit.cmake

@@ -1 +0,0 @@
-include(${CMAKE_CURRENT_LIST_DIR}/Trace.cmake)

Tests/RunCMake/CMakePresets/TraceInheritOverride.cmake

@@ -1 +0,0 @@
-include(${CMAKE_CURRENT_LIST_DIR}/NoTrace.cmake)

Tests/RunCMake/CMakePresets/TraceRedirectInherit.cmake

@@ -1 +0,0 @@
-include(${CMAKE_CURRENT_LIST_DIR}/TraceRedirect.cmake)

Tests/RunCMake/CMakePresets/TraceSourceInherit.cmake

@@ -1 +0,0 @@
-include(${CMAKE_CURRENT_LIST_DIR}/TraceSource.cmake)

Tests/RunCMake/CMakePresetsBuild/CMakeLists.txt.in

@@ -1,3 +1,3 @@
 cmake_minimum_required(VERSION 3.19)
 project("@CASE_NAME@" NONE)
-include("@CASE_SOURCE_DIR@/@CASE_NAME@.cmake")
+include("@CASE_SOURCE_DIR@/@CASE_NAME@.cmake" OPTIONAL)

Tests/RunCMake/CMakePresetsPackage/CMakeLists.txt.in

@@ -1,3 +1,3 @@
 cmake_minimum_required(VERSION 3.19)
 project("@CASE_NAME@" NONE)
-include("@CASE_SOURCE_DIR@/@CASE_NAME@.cmake")
+include("@CASE_SOURCE_DIR@/@CASE_NAME@.cmake" OPTIONAL)

Tests/RunCMake/CMakePresetsTest/CMakeLists.txt.in

@@ -1,3 +1,3 @@
 cmake_minimum_required(VERSION 3.19)
 project("@CASE_NAME@" NONE)
-include("@CASE_SOURCE_DIR@/@CASE_NAME@.cmake")
+include("@CASE_SOURCE_DIR@/@CASE_NAME@.cmake" OPTIONAL)

Tests/RunCMake/CMakePresetsWorkflow/CMakeLists.txt.in

@@ -1,3 +1,3 @@
 cmake_minimum_required(VERSION 3.19)
 project("@CASE_NAME@" NONE)
-include("@CASE_SOURCE_DIR@/@CASE_NAME@.cmake")
+include("@CASE_SOURCE_DIR@/@CASE_NAME@.cmake" OPTIONAL)