SQL: [Tests] Enable integration tests for fixed issues (#40664)

Enable some Ignored integration tests for issues/features that
have already been resolved/implemented.

(cherry picked from commit c23580f)

Author: matriv

x-pack/plugin/sql/qa/src/main/resources/select.sql-spec

@@ -108,9 +108,7 @@ selectMathPIFromIndexWithWhereEvaluatingToTrue
 SELECT PI() AS pi FROM test_emp WHERE ROUND(PI(),2)=3.14;
 selectMathPIFromIndexWithWhereEvaluatingToTrueAndWithLimit
 SELECT PI() AS pi FROM test_emp WHERE ROUND(PI(),2)=3.14 LIMIT 3;
-// AwaitsFix https://github.com/elastic/elasticsearch/issues/35980
-selectMathPIFromIndexWithWhereEvaluatingToFalse-Ignore
+selectMathPIFromIndexWithWhereEvaluatingToFalse
 SELECT PI() AS pi FROM test_emp WHERE PI()=5;
-// AwaitsFix https://github.com/elastic/elasticsearch/issues/35980
-selectMathPIFromIndexWithWhereEvaluatingToFalseAndWithLimit-Ignore
+selectMathPIFromIndexWithWhereEvaluatingToFalseAndWithLimit
 SELECT PI() AS pi FROM test_emp WHERE PI()=5 LIMIT 3;