FIX: remove checks of string mapping to uuid (#274)

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[AB#39185](https://sqlclientdrivers.visualstudio.com/c6d89619-62de-46a0-8b46-70b92a84d85e/_workitems/edit/39185)

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### Summary   
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This pull request removes the logic for automatically mapping UUID
string parameters to GUID types in the `_map_sql_type` method of
`mssql_python/cursor.py`. As a result, UUID strings will no longer be
converted to binary GUID representations when binding parameters.

Type mapping changes:

* Removed the code that attempted to parse parameters as UUIDs and map
them to SQL GUID types, so UUID strings will now be handled as regular
strings instead of being converted to `bytes_le` for GUID columns.

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Author: gargsaumya

mssql_python/cursor.py

@@ -363,19 +363,6 @@ def _map_sql_type(self, param, parameters_list, i, min_val=None, max_val=None):
                     False,
                 )
 
-            try:
-                val = uuid.UUID(param)
-                parameters_list[i] = val.bytes_le
-                return (
-                    ddbc_sql_const.SQL_GUID.value,
-                    ddbc_sql_const.SQL_C_GUID.value,
-                    16,
-                    0,
-                    False
-                )
-            except ValueError:
-                pass
-
             # String mapping logic here
             is_unicode = self._is_unicode_string(param)