Remove ninja by default

Author: Jonathan Six

CMakePresets.json

@@ -11,7 +11,6 @@
       "hidden": false,
       "description": "Debug configuration with OpenGL API",
       "binaryDir": "${sourceDir}/out/x64-Debug_ogl",
-      "generator": "Ninja",
       "cacheVariables": {
         "CMAKE_BUILD_TYPE": "Debug",
         "USE_OPENGL_API": "True"
@@ -22,7 +21,6 @@
       "hidden": false,
       "description": "Release configuration with OpenGL API",
       "binaryDir": "${sourceDir}/out/x64-Release_ogl",
-      "generator": "Ninja",
       "cacheVariables": {
         "CMAKE_BUILD_TYPE": "Release",
         "USE_OPENGL_API": "True"