[DOCS] Remove unneeded options from [source,sql] code blocks (#42759)

In AsciiDoc, `subs="attributes,callouts,macros"` options were required
to render `include-tagged::` in a code block.

With elastic/docs#827, Elasticsearch Reference documentation migrated
from AsciiDoc to Asciidoctor.

In Asciidoctor, the `subs="attributes,callouts,macros"` options are no
longer needed to render `include-tagged::` in a code block. This commit
removes those unneeded options.

Resolves #41589

docs/reference/sql/functions/conditional.asciidoc

@@ -33,17 +33,17 @@ If the condition’s result is true, the value of the result expression that fol
 the subsequent when clauses will be skipped and not processed.
 
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[case]
 ----
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[caseReturnNull]
 ----
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[caseWithElse]
 ----
@@ -70,12 +70,12 @@ CASE WHEN expression = value1 THEN result1
 END
 ----
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[caseWithOperand]
 ----
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[caseWithOperandAndElse]
 ----
@@ -155,12 +155,12 @@ If all arguments are null, then it returns `null`.
 
 
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[coalesceReturnNonNull]
 ----
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[coalesceReturnNull]
 ----
@@ -199,12 +199,12 @@ If all arguments are null, then it returns `null`.
 
 
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[greatestReturnNonNull]
 ----
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[greatestReturnNull]
 ----
@@ -237,12 +237,12 @@ If all arguments are null, then it returns `null`.
 
 
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[ifNullReturnFirst]
 ----
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[ifNullReturnSecond]
 ----
@@ -276,12 +276,12 @@ logic of programming languages. If the 3rd expression is not provided and the co
 `null` is returned.
 
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[iifWithDefaultValue]
 ----
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[iifWithoutDefaultValue]
 ----
@@ -324,12 +324,12 @@ If all arguments are null, then it returns `null`.
 
 
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[isNullReturnFirst]
 ----
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[isNullReturnSecond]
 ----
@@ -369,12 +369,12 @@ If all arguments are null, then it returns `null`.
 
 
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[leastReturnNonNull]
 ----
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[leastReturnNull]
 ----
@@ -406,12 +406,12 @@ Returns `null` when the two input expressions are equal and
 if not, it returns the 1st expression.
 
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[nullIfReturnFirst]
 ----
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[nullIfReturnNull]
 ----
@@ -445,12 +445,12 @@ If all arguments are null, then it returns `null`.
 
 
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[nvlReturnFirst]
 ----
 
-["source","sql",subs="attributes,callouts,macros"]
+[source, sql]
 ----
 include-tagged::{sql-specs}/docs/docs.csv-spec[nvlReturnSecond]
 ----