Move lint suppression from baseline.xml to @SuppressLint. (#55447)

I think you just had the lint identifier wrong?

Closes flutter/flutter#155712.

shell/platform/android/io/flutter/embedding/android/FlutterView.java

@@ -683,7 +683,7 @@ private int guessBottomKeyboardInset(WindowInsets insets) {
   // The annotations to suppress "InlinedApi" and "NewApi" lints prevent lint warnings
   // caused by usage of Android Q APIs. These calls are safe because they are
   // guarded.
-  @SuppressLint({"InlinedApi", "NewApi"})
+  @SuppressLint({"InlinedApi", "NewApi", "DeprecatedSinceApi"})
   @NonNull
   public final WindowInsets onApplyWindowInsets(@NonNull WindowInsets insets) {
     WindowInsets newInsets = super.onApplyWindowInsets(insets);

tools/android_lint/baseline.xml

@@ -1,17 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <issues format="6" by="lint 8.3.0 [11479570] " type="baseline" client="" dependencies="true" name="" variant="all" version="8.3.0 [11479570] ">
 
-    <issue
-        id="DeprecatedSinceApi"
-        message="This method is deprecated as of API level 30"
-        errorLine1="        zeroSides = calculateShouldZeroSides();"
-        errorLine2="                    ~~~~~~~~~~~~~~~~~~~~~~~~~~">
-        <location
-            file="../../../flutter/shell/platform/android/io/flutter/embedding/android/FlutterView.java"
-            line="759"
-            column="21"/>
-    </issue>
-
     <issue
         id="HardcodedDebugMode"
         message="Avoid hardcoding the debug mode; leaving it out allows debug and release builds to automatically assign one"