[SPARK-43928][SQL][PYTHON][CONNECT][FOLLOWUP] Update `excludedSqlFunc…

…tions` of `DataFrameFunctionsSuite`

### What changes were proposed in this pull request?
#41608 add bit operations to Scala, Python and Connect API, but missing the test for `DataFrameFunctionsSuite`.

### Why are the changes needed?
Fix missing tests

### Does this PR introduce _any_ user-facing change?
'No'.
New feature.

### How was this patch tested?
N/A

Closes #41640 from beliefer/SPARK-43928_followup.

Authored-by: Jiaan Geng <beliefer@163.com>
Signed-off-by: Ruifeng Zheng <ruifengz@apache.org>

sql/core/src/test/scala/org/apache/spark/sql/DataFrameFunctionsSuite.scala

@@ -77,7 +77,6 @@ class DataFrameFunctionsSuite extends QueryTest with SharedSparkSession {
       "random",
       "array_agg", "char_length", "character_length",
       "lcase", "position", "printf", "substr", "ucase", "day", "cardinality", "sha",
-      "getbit",
       // aliases for existing functions
       "reflect", "java_method" // Only needed in SQL
     )