Remove CTestTest3.

At this point, CTestTest3 causes more problems than it's worth.
It uses CVS to grab a remote (over the network) copy of kwsys
code for testing. This causes some sort of problem nearly every
night on the nightly CMake dashboards. Worse: it causes problems
on different machines on different nights, then the next day, it's
fine again. So: remove this test and monitor the coverage.

If we lose a significant portion of code coverage, I will revert
this commit and re-activate the test. However, if we do not lose
a significant portion of code coverage, I will remove the code
for the test as well as removing it from the CMakeLists.txt file.

Brad King and I discussed this over the last few weeks, and we both
think we have sufficient coverage of all the checkout and update code
in other locally (non-network) based tests.

On the other hand, even if we do take a mild hit on coverage temporarily,
it should be relatively easy to increase our coverage again by adding
bits to those other locally based tests.

Tests/CMakeLists.txt

@@ -1470,13 +1470,6 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=master -P ${CMake_SOURCE_DIR}/Utilities/
       --output-log "${CMake_BINARY_DIR}/Tests/CTestTest2/testOutput.log"
       )
 
-    CONFIGURE_FILE("${CMake_SOURCE_DIR}/Tests/CTestTest3/test.cmake.in"
-      "${CMake_BINARY_DIR}/Tests/CTestTest3/test.cmake" @ONLY ESCAPE_QUOTES)
-    ADD_TEST(CTestTest3 ${CMAKE_CTEST_COMMAND}
-      -S "${CMake_BINARY_DIR}/Tests/CTestTest3/test.cmake" -V
-      --output-log "${CMake_BINARY_DIR}/Tests/CTestTest3/testOutput.log"
-      )
-
     # these tests take a long time, make sure they have it
     # if timeouts have not already been set
     GET_TEST_PROPERTY(CTestTest TIMEOUT PREVIOUS_TIMEOUT)
@@ -1490,12 +1483,6 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=master -P ${CMake_SOURCE_DIR}/Utilities/
       SET_TESTS_PROPERTIES ( CTestTest2
         PROPERTIES TIMEOUT ${CMAKE_LONG_TEST_TIMEOUT})
     ENDIF ("${PREVIOUS_TIMEOUT}" MATCHES NOTFOUND)
-
-    GET_TEST_PROPERTY(CTestTest3 TIMEOUT PREVIOUS_TIMEOUT)
-    IF ("${PREVIOUS_TIMEOUT}" MATCHES NOTFOUND)
-      SET_TESTS_PROPERTIES ( CTestTest3
-        PROPERTIES TIMEOUT ${CMAKE_LONG_TEST_TIMEOUT})
-    ENDIF ("${PREVIOUS_TIMEOUT}" MATCHES NOTFOUND)
   ENDIF (CTEST_TEST_CTEST AND CMAKE_RUN_LONG_TESTS AND CMAKE_TESTS_CDASH_SERVER)
 
   IF(NOT DEFINED CTEST_RUN_CTestSubmitLargeOutput)