Remove -ms-linear-gradient that was only used by IE 10 preview releases.

select2.css

@@ -55,7 +55,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background-image: -webkit-linear-gradient(center bottom, #eee 0%, #fff 50%);
     background-image: -moz-linear-gradient(center bottom, #eee 0%, #fff 50%);
     background-image: -o-linear-gradient(bottom, #eee 0%, #fff 50%);
-    background-image: -ms-linear-gradient(top, #fff 0%, #eee 50%);
     filter: progid:DXImageTransform.Microsoft.gradient(startColorstr = '#ffffff', endColorstr = '#eeeeee', GradientType = 0);
     background-image: linear-gradient(top, #fff 0%, #eee 50%);
 }
@@ -69,7 +68,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background-image: -webkit-linear-gradient(center bottom, #eee 0%, #fff 90%);
     background-image: -moz-linear-gradient(center bottom, #eee 0%, #fff 90%);
     background-image: -o-linear-gradient(bottom, #eee 0%, #fff 90%);
-    background-image: -ms-linear-gradient(top, #eee 0%, #fff 90%);
     filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff', endColorstr='#eeeeee', GradientType=0);
     background-image: linear-gradient(top, #eee 0%, #fff 90%);
 }
@@ -198,7 +196,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background-image: -webkit-linear-gradient(center bottom, #ccc 0%, #eee 60%);
     background-image: -moz-linear-gradient(center bottom, #ccc 0%, #eee 60%);
     background-image: -o-linear-gradient(bottom, #ccc 0%, #eee 60%);
-    background-image: -ms-linear-gradient(top, #ccc 0%, #eee 60%);
     filter: progid:DXImageTransform.Microsoft.gradient(startColorstr = '#eeeeee', endColorstr = '#cccccc', GradientType = 0);
     background-image: linear-gradient(top, #ccc 0%, #eee 60%);
 }
@@ -246,7 +243,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background: url('select2.png') no-repeat 100% -22px, -webkit-linear-gradient(center bottom, #fff 85%, #eee 99%);
     background: url('select2.png') no-repeat 100% -22px, -moz-linear-gradient(center bottom, #fff 85%, #eee 99%);
     background: url('select2.png') no-repeat 100% -22px, -o-linear-gradient(bottom, #fff 85%, #eee 99%);
-    background: url('select2.png') no-repeat 100% -22px, -ms-linear-gradient(top, #fff 85%, #eee 99%);
     background: url('select2.png') no-repeat 100% -22px, linear-gradient(top, #fff 85%, #eee 99%);
 }
 
@@ -260,7 +256,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background: url('select2-spinner.gif') no-repeat 100%, -webkit-linear-gradient(center bottom, #fff 85%, #eee 99%);
     background: url('select2-spinner.gif') no-repeat 100%, -moz-linear-gradient(center bottom, #fff 85%, #eee 99%);
     background: url('select2-spinner.gif') no-repeat 100%, -o-linear-gradient(bottom, #fff 85%, #eee 99%);
-    background: url('select2-spinner.gif') no-repeat 100%, -ms-linear-gradient(top, #fff 85%, #eee 99%);
     background: url('select2-spinner.gif') no-repeat 100%, linear-gradient(top, #fff 85%, #eee 99%);
 }
 
@@ -286,7 +281,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background-image: -webkit-linear-gradient(center bottom, #fff 0%, #eee 50%);
     background-image: -moz-linear-gradient(center bottom, #fff 0%, #eee 50%);
     background-image: -o-linear-gradient(bottom, #fff 0%, #eee 50%);
-    background-image: -ms-linear-gradient(top, #fff 0%, #eee 50%);
     filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#eeeeee', endColorstr='#ffffff', GradientType=0);
     background-image: linear-gradient(top, #fff 0%, #eee 50%);
 }
@@ -300,7 +294,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background-image: -webkit-linear-gradient(center top, #fff 0%, #eee 50%);
     background-image: -moz-linear-gradient(center top, #fff 0%, #eee 50%);
     background-image: -o-linear-gradient(top, #fff 0%, #eee 50%);
-    background-image: -ms-linear-gradient(bottom, #fff 0%, #eee 50%);
     filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#eeeeee', endColorstr='#ffffff', GradientType=0);
     background-image: linear-gradient(bottom, #fff 0%, #eee 50%);
 }
@@ -456,7 +449,6 @@ disabled look for disabled choices in the results dropdown
     background-image: -webkit-linear-gradient(top, #eee 1%, #fff 15%);
     background-image: -moz-linear-gradient(top, #eee 1%, #fff 15%);
     background-image: -o-linear-gradient(top, #eee 1%, #fff 15%);
-    background-image: -ms-linear-gradient(top, #eee 1%, #fff 15%);
     background-image: linear-gradient(top, #eee 1%, #fff 15%);
 }
 
@@ -537,7 +529,6 @@ disabled look for disabled choices in the results dropdown
     background-image: -webkit-linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eee 100%);
     background-image: -moz-linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eee 100%);
     background-image: -o-linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eee 100%);
-    background-image: -ms-linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eee 100%);
     background-image: linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eee 100%);
 }
 .select2-container-multi .select2-choices .select2-search-choice .select2-chosen {