Do not produce libraries json declarations dump

It's no longer needed for checking binary compatibility.
Clean build of these libraries is no longer required too.

Cleanup build.gradle of binary-compatibility-validator.

libraries/stdlib/jdk7/build.gradle

@@ -60,7 +60,6 @@ compileKotlin {
             "-Xallow-kotlin-package",
             "-Xmultifile-parts-inherit",
             "-Xnormalize-constructor-calls=enable",
-            "-Xdump-declarations-to=${buildDir}/stdlib-jdk7-declarations.json",
             "-module-name", project.name
     ]
 }

libraries/stdlib/jdk8/build.gradle

@@ -63,7 +63,6 @@ compileKotlin {
             "-Xallow-kotlin-package",
             "-Xmultifile-parts-inherit",
             "-Xnormalize-constructor-calls=enable",
-            "-Xdump-declarations-to=${buildDir}/stdlib-jdk8-declarations.json",
             "-module-name", project.name
     ]
 }

libraries/stdlib/jre7/build.gradle

@@ -53,7 +53,6 @@ compileKotlin {
             "-Xallow-kotlin-package",
             "-Xmultifile-parts-inherit",
             "-Xnormalize-constructor-calls=enable",
-            "-Xdump-declarations-to=${buildDir}/stdlib-jre7-declarations.json",
             "-module-name", project.name
     ]
 }

libraries/stdlib/jre8/build.gradle

@@ -56,7 +56,6 @@ compileKotlin {
             "-Xallow-kotlin-package",
             "-Xmultifile-parts-inherit",
             "-Xnormalize-constructor-calls=enable",
-            "-Xdump-declarations-to=${buildDir}/stdlib-jre8-declarations.json",
             "-module-name", project.name
     ]
 }

libraries/stdlib/jvm/build.gradle

@@ -174,7 +174,6 @@ compileKotlin {
                 "-Xallow-kotlin-package",
                 "-Xmultifile-parts-inherit",
                 "-Xnormalize-constructor-calls=enable",
-                "-Xdump-declarations-to=${buildDir}/stdlib-declarations.json",
                 "-module-name", "kotlin-stdlib"
         ]
     }
@@ -189,7 +188,6 @@ compileExperimentalKotlin {
                 "-version",
                 "-Xallow-kotlin-package",
                 "-Xmultifile-parts-inherit",
-                "-Xdump-declarations-to=${buildDir}/stdlib-experimental-declarations.json",
                 "-module-name", "kotlin-stdlib-experimental"
         ]
     }
@@ -205,7 +203,6 @@ compileCoroutinesKotlin {
                 "-version",
                 "-Xallow-kotlin-package",
                 "-Xmultifile-parts-inherit",
-                "-Xdump-declarations-to=${buildDir}/stdlib-coroutines-declarations.json",
                 "-module-name", "kotlin-stdlib-coroutines"
         ]
     }

libraries/stdlib/runtime/build.gradle

@@ -43,7 +43,6 @@ compileKotlin {
         freeCompilerArgs = [
                 "-Xallow-kotlin-package",
                 "-Xnormalize-constructor-calls=enable",
-                "-Xdump-declarations-to=${buildDir}/runtime-declarations.json",
                 "-Xmulti-platform",
                 "-cp", "${rootDir}/dist/builtins",
                 "-module-name", project.name