Run MacOS and no-telemetry tests only on latest PG

Since we now have all PG16 patches merged we dont need to run
MacOS and no-telemetry build tests on multiple PG versions.
Especially the MacOS test is quite time-consuming.

.github/gh_matrix_builder.py

@@ -198,23 +198,13 @@ def macos_config(overrides):
 )
 
 # test timescaledb with release config on latest postgres release in MacOS
-m["include"].append(
-    build_release_config(
-        macos_config({"pg": PG15_LATEST, "ignored_tests": ignored_tests})
-    )
-)
-
 m["include"].append(
     build_release_config(
         macos_config({"pg": PG16_LATEST, "ignored_tests": ignored_tests})
     )
 )
 
 # test latest postgres release without telemetry
-m["include"].append(
-    build_without_telemetry({"pg": PG15_LATEST, "ignored_tests": ignored_tests})
-)
-
 m["include"].append(
     build_without_telemetry(
         {