Remove outdated tests

Remove tests that asserted that Cursor Down (CUD) and Cursor Up (CUU)
escape sequences were affected by the scrolling region set by DECSTBM.

This was incorrect and recently fixed:
termux#1340

terminal-emulator/src/test/java/com/termux/terminal/CursorAndScreenTest.java

@@ -133,8 +133,6 @@ public void testCursorUp() {
 		withTerminalSized(3, 3).enterString("ABCDEFG\033[2AH").assertLinesAre("AHC", "DEF", "G  ");
 		// If an attempt is made to move the cursor above the top margin, the cursor stops at the top margin:
 		withTerminalSized(3, 3).enterString("ABCDEFG\033[44AH").assertLinesAre("AHC", "DEF", "G  ");
-		// Set top margin and validate that cursor does not go above it:
-		withTerminalSized(3, 3).enterString("\033[2rABCDEFG\033[44AH").assertLinesAre("ABC", "DHF", "G  ");
 	}
 
 	public void testCursorDown() {
@@ -143,8 +141,6 @@ public void testCursorDown() {
 		withTerminalSized(3, 3).enterString("AB\033[2BC").assertLinesAre("AB ", "   ", "  C");
 		// If an attempt is made to move the cursor below the bottom margin, the cursor stops at the bottom margin:
 		withTerminalSized(3, 3).enterString("AB\033[44BC").assertLinesAre("AB ", "   ", "  C");
-		// Set bottom margin and validate that cursor does not go above it:
-		withTerminalSized(3, 3).enterString("\033[1;2rAB\033[44BC").assertLinesAre("AB ", "  C", "   ");
 	}
 
 	public void testReportCursorPosition() {