Bug 1110641 - Remove unused variable `minWidth` and "ui.plugin.panel.min-width" pref from widget/cocoa/ComplexTextInputPanel.mm. r=josh

modules/libpref/init/all.js

@@ -1590,7 +1590,6 @@ pref("network.predictor.max-queue-size", 50);
 pref("network.predictor.max-db-size", 157286400); // bytes
 pref("network.predictor.preserve", 80); // percentage of predictor data to keep when cleaning up
 
-
 // The following prefs pertain to the negotiate-auth extension (see bug 17578),
 // which provides transparent Kerberos or NTLM authentication using the SPNEGO
 // protocol.  Each pref is a comma-separated list of keys, where each key has
@@ -2618,7 +2617,6 @@ pref("font.size.inflation.lineThreshold", 400);
  */
 pref("font.size.inflation.mappingIntercept", 1);
 
-
 /*
  * This controls the percentage that fonts will be inflated, if font
  * size inflation is enabled. Essentially, if we have a specified font
@@ -3303,9 +3301,6 @@ pref("ui.panel.default_level_parent", false);
 
 pref("ui.plugin.cancel_composition_at_input_source_changed", false);
 
-// The min width of composition window for plugins
-pref("ui.plugin.panel.min-width", 500);
-
 pref("mousewheel.system_scroll_override_on_root_content.enabled", false);
 
 // Macbook touchpad two finger pixel scrolling
@@ -3856,7 +3851,6 @@ pref("webgl.angle.force-d3d11", false);
 pref("gfx.gralloc.fence-with-readpixels", false);
 #endif
 
-
 // Stagefright prefs
 pref("stagefright.force-enabled", false);
 pref("stagefright.disabled", false);

widget/cocoa/ComplexTextInputPanel.mm

@@ -188,7 +188,6 @@ extern "C" OSStatus TSMProcessRawKeyEvent(EventRef anEvent);
 - (void)adjustTo:(NSPoint)point
 {
   NSRect selfRect = [self frame];
-  CGFloat minWidth = static_cast<CGFloat>(Preferences::GetUint("ui.plugin.panel.min-width", 500));
   NSRect rect = NSMakeRect(point.x,
                            point.y - selfRect.size.height,
                            500,