Don't install static libraries

Disable installing static libraries for now by resetting the installer
when creating a static library variant.

Change-Id: I9360b5c57d95fc0712539accb9450b5fa402fade
diff --git a/cc/cc.go b/cc/cc.go
index 251d1cd..ec26f74 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -2174,10 +2174,12 @@
 				if linker.buildStatic() && linker.buildShared() {
 					modules = mctx.CreateLocalVariations("static", "shared")
 					modules[0].(*Module).linker.(baseLinkerInterface).setStatic(true)
+					modules[0].(*Module).installer = nil
 					modules[1].(*Module).linker.(baseLinkerInterface).setStatic(false)
 				} else if linker.buildStatic() {
 					modules = mctx.CreateLocalVariations("static")
 					modules[0].(*Module).linker.(baseLinkerInterface).setStatic(true)
+					modules[0].(*Module).installer = nil
 				} else if linker.buildShared() {
 					modules = mctx.CreateLocalVariations("shared")
 					modules[0].(*Module).linker.(baseLinkerInterface).setStatic(false)