Remove dead code (#11082)

Removed:
- MessageStore::addFromPacket and addFromString, superseded by
  tryAddFromPacket
- GeoCoord rangeRadiansToMeters, distanceTo, bearingTo
- Router::rawSend, declared virtual with no override and no caller
- ContentHandler handleHotspot, handleFs, handleAdminSettings,
  handleAdminSettingsApply, handleDeleteFsContent and their commented
  route registrations, plus the now unreachable htmlDeleteDir and the
  handleUpdateFs declaration that had no definition
- ContentHelper replaceAll
- OnScreenKeyboardModule popup chain: showPopup, clearPopup, drawPopup,
  drawPopupOverlay and their state, unreachable since the frame based UI
  was replaced by baseUI
- DebugRenderer drawDebugInfoTrampoline, drawDebugInfoSettingsTrampoline
  and the orphaned drawFrameSettings
- NodeListRenderer calculateMaxScroll, drawColumns and a stale extern
  haveGlyphs declaration with no definition
- UIRenderer::haveGlyphs, Screen::blink,
  NotificationRenderer::showKeyboardMessagePopupWithTitle,
  VirtualKeyboard::getInputText
- InkHUD touchNavLeft, touchNavRight, Applet::getActiveNodeCount,
  ThreadedMessageApplet::saveMessagesToFlash
- TwoButton::setHandlerUp, TwoButtonExtended setHandlerUp,
  setJoystickDownHandlers, setJoystickUpHandlers
- CannedMessageModule LaunchRepeatDestination, isCharInputAllowed,
  hasMessages
- TrafficManagementModule resetStats, recordRouterHopPreserved,
  saturatingIncrement
- UnitConversions::MetersPerSecondToMilesPerHour
- EncryptedStorage getSessionRemainingSeconds
- BMI270Sensor::writeRegisters, GPS::hasFlow, FSCommon copyFile,
  SerialConsole consolePrintf, buzz playLongPressLeadUp,
  memGet displayPercentHeapFree

src/modules/CannedMessageModule.cpp

@@ -82,7 +82,6 @@ CannedMessageModule::CannedMessageModule()
 void CannedMessageModule::LaunchWithDestination(NodeNum newDest, uint8_t newChannel)
 {
     // Do NOT override explicit broadcast replies
-    // Only reuse lastDest in LaunchRepeatDestination()
 
     if (newDest == 0) {
         dest = NODENUM_BROADCAST;
@@ -114,19 +113,9 @@ void CannedMessageModule::LaunchWithDestination(NodeNum newDest, uint8_t newChan
     LOG_DEBUG("[CannedMessage] LaunchWithDestination dest=0x%08x ch=%d", dest, channel);
 }
 
-void CannedMessageModule::LaunchRepeatDestination()
-{
-    if (!lastDestSet) {
-        LaunchWithDestination(NODENUM_BROADCAST, 0);
-    } else {
-        LaunchWithDestination(lastDest, lastChannel);
-    }
-}
-
 void CannedMessageModule::LaunchFreetextWithDestination(NodeNum newDest, uint8_t newChannel)
 {
     // Do NOT override explicit broadcast replies
-    // Only reuse lastDest in LaunchRepeatDestination()
 
     if (newDest == 0) {
         dest = NODENUM_BROADCAST;
@@ -308,12 +297,6 @@ void CannedMessageModule::updateDestinationSelectionList()
     }
 }
 
-// Returns true if character input is currently allowed (used for search/freetext states)
-bool CannedMessageModule::isCharInputAllowed() const
-{
-    return runState == CANNED_MESSAGE_RUN_STATE_FREETEXT || runState == CANNED_MESSAGE_RUN_STATE_DESTINATION_SELECTION;
-}
-
 static int getRowHeightForEmoteText(const char *text, int minimumHeight, int emoteSpacing = 2)
 {
     // Grow the row only when an emote is taller than the font.
@@ -1437,13 +1420,6 @@ bool CannedMessageModule::shouldDraw()
             this->runState == CANNED_MESSAGE_RUN_STATE_EMOTE_PICKER);
 }
 
-// Has the user defined any canned messages?
-// Expose publicly whether canned message module is ready for use
-bool CannedMessageModule::hasMessages()
-{
-    return (this->messagesCount > 0);
-}
-
 int CannedMessageModule::getNextIndex()
 {
     if (this->currentMessageIndex >= (this->messagesCount - 1)) {