chore(build/common.prf): Simplify check for checked-in wrappers

Author: jcfr

build/common.prf

@@ -23,33 +23,8 @@ PYTHONQT_GENERATED_PATH = $$PWD/../generated_cpp
 !exists($$PYTHONQT_GENERATED_PATH) {
   # If no files are generated, try the checked-in wrappers:
   PYTHONQT_GENERATED_PATH = $$PWD/../generated_cpp_$${QT_MAJOR_VERSION}$${QT_MINOR_VERSION}
-
   !exists($$PYTHONQT_GENERATED_PATH) {
-    # For Qt5 we know that the older generated wrappers work with the later
-    # versions, even (apparently) Qt5.15, so:
-    equals(QT_MAJOR_VERSION, 5) {
-      # Qt5: have 5.0, 5.3, 5.4, 5.6 and 5.11 at present:
-      lessThan(QT_MINOR_VERSION, 3) { # 5.1, 5.2
-        PYTHONQT_GENERATED_PATH = $$PWD/../generated_cpp_50
-      }
-      else: lessThan(QT_MINOR_VERSION, 6) { # 5.5
-        PYTHONQT_GENERATED_PATH = $$PWD/../generated_cpp_54
-      }
-      else: lessThan(QT_MINOR_VERSION, 11) { # 5.7, 5.8, 5.9, 5.10
-        PYTHONQT_GENERATED_PATH = $$PWD/../generated_cpp_56
-      }
-      else: lessThan(QT_MINOR_VERSION, 15) { # 5.11, 5.12, 5.13, 5.14
-        PYTHONQT_GENERATED_PATH = $$PWD/../generated_cpp_511
-      }
-      else { # 5.15
-        # LATEST Qt5 generated files:
-        PYTHONQT_GENERATED_PATH = $$PWD/../generated_cpp_515
-      }
-    }
-
-    !exists($$PYTHONQT_GENERATED_PATH) {
-      error("No generated sources exist for Qt$${QT_VERSION}")
-    }
+    error("No generated sources exist for Qt$${QT_VERSION}")
   }
 }