[literal-comparison] Cleanup of identical/duplicated functional tests

tests/functional/c/comparison_of_constants.py

@@ -1,9 +1,5 @@
 # pylint: disable=missing-docstring, comparison-with-itself, invalid-name
 
-
-if 2 is 2:  # [literal-comparison, comparison-of-constants]
-    pass
-
 while 2 == 2:  # [comparison-of-constants]
     pass
 
@@ -22,14 +18,6 @@
 
 CONST = 24
 
-if CONST is 0:  # [literal-comparison]
-    pass
-
-if CONST is 1:  # [literal-comparison]
-    pass
-
-if CONST is 42:  # [literal-comparison]
-    pass
 
 if  0 < CONST < 42:
     pass

tests/functional/c/comparison_of_constants.txt

@@ -1,9 +1,4 @@
-comparison-of-constants:4:3:4:9::"Comparison between constants: '2 is 2' has a constant value":HIGH
-literal-comparison:4:3:4:9::In '2 is 2', use '==' when comparing constant literals not 'is' ('2 == 2'):HIGH
-comparison-of-constants:7:6:7:12::"Comparison between constants: '2 == 2' has a constant value":HIGH
-comparison-of-constants:10:6:10:11::"Comparison between constants: '2 > 2' has a constant value":HIGH
-comparison-of-constants:20:3:20:15::"Comparison between constants: 'True == True' has a constant value":HIGH
-singleton-comparison:20:3:20:15::Comparison 'True == True' should be 'True is True' if checking for the singleton value True, or 'True' if testing for truthiness:UNDEFINED
-literal-comparison:25:3:25:13::In 'CONST is 0', use '==' when comparing constant literals not 'is' ('CONST == 0'):HIGH
-literal-comparison:28:3:28:13::In 'CONST is 1', use '==' when comparing constant literals not 'is' ('CONST == 1'):HIGH
-literal-comparison:31:3:31:14::In 'CONST is 42', use '==' when comparing constant literals not 'is' ('CONST == 42'):HIGH
+comparison-of-constants:3:6:3:12::"Comparison between constants: '2 == 2' has a constant value":HIGH
+comparison-of-constants:6:6:6:11::"Comparison between constants: '2 > 2' has a constant value":HIGH
+comparison-of-constants:16:3:16:15::"Comparison between constants: 'True == True' has a constant value":HIGH
+singleton-comparison:16:3:16:15::Comparison 'True == True' should be 'True is True' if checking for the singleton value True, or 'True' if testing for truthiness:UNDEFINED