HPCC-21585 Mysqlembed fails with "Commands out of sync" exception

Remove extra new line from the end of the keyfile.

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>

testing/regress/ecl/key/mysqlembed.xml

@@ -70,4 +70,3 @@
  <Row><name>name1</name><bval>16737</bval><value>1</value><boolval>true</boolval><r8>1.2</r8><r4>3.400000095367432</r4><d>6161353561613535</d><ddd>1234567.89</ddd><u1>Straße</u1><u2>Straße  </u2><dt>1963-11-22 12:30:00</dt></Row>
  <Row><name>name2</name><bval>66</bval><value>2</value><boolval>false</boolval><r8>5.6</r8><r4>7.800000190734863</r4><d>3030</d><ddd>-1234567.89</ddd><u1>là</u1><u2>là      </u2><dt>2015-12-25 01:23:45</dt></Row>
 </Dataset>
-