Remove duplicated startInputUncheckedLocked invocation

As CL[1] removed unused "debug.optimize_startinput" flag logic in
IMMS#startInputOrWindowGainedFocusInternalLocked, we can even remove
duplicated startInputUncheckedLocked invocation to simpfy the code
block of the input didn't start part.

Note that this CL is a mechanical code refactoring, it should not have
any behavior change.

[1]: Ie7b09f16e517c0550ac495a8a8c8ef20abb6938e

Bug: 171827834
Test: atest CtsInputMethodTestCases
Change-Id: I8fbb2c6ad4dfbd8388d1780375f53fd750ebd83e
diff --git a/services/core/java/com/android/server/inputmethod/InputMethodManagerService.java b/services/core/java/com/android/server/inputmethod/InputMethodManagerService.java
index 1e66589..b4b5379 100644
--- a/services/core/java/com/android/server/inputmethod/InputMethodManagerService.java
+++ b/services/core/java/com/android/server/inputmethod/InputMethodManagerService.java
@@ -3647,12 +3647,9 @@
                         hideCurrentInputLocked(mCurFocusedWindow, 0, null,
                                 SoftInputShowHideReason.HIDE_SAME_WINDOW_FOCUSED_WITHOUT_EDITOR);
                     }
-                    res = startInputUncheckedLocked(cs, inputContext, missingMethods, attribute,
-                            startInputFlags, startInputReason);
-                } else {
-                    res = startInputUncheckedLocked(cs, inputContext, missingMethods, attribute,
-                            startInputFlags, startInputReason);
                 }
+                res = startInputUncheckedLocked(cs, inputContext, missingMethods, attribute,
+                        startInputFlags, startInputReason);
             } else {
                 res = InputBindResult.NULL_EDITOR_INFO;
             }